diff --git a/src/main/java/cz/jull/Game.java b/src/main/java/cz/jull/Game.java
index b6bb02f..f465914 100644
--- a/src/main/java/cz/jull/Game.java
+++ b/src/main/java/cz/jull/Game.java
@@ -39,6 +39,9 @@ public class Game {
         this.strings = strings;
     }
 
+    public Game() {
+    }
+
     public void play() {
         strings.print("welcome");
         Cli.pressEnter();
@@ -88,7 +91,7 @@ public class Game {
 
     public void build(Item item) {
         if (!player.getInventory().contains(item)) {
-            System.out.println(" never "); // TODO
+            strings.print("cantBuild");
             return;
         }
 
@@ -108,7 +111,7 @@ public class Game {
     public void cutTrees() {
         long axeCount = player.getInventory().stream().filter(item -> item == Item.AXE).count();
         if (axeCount < forestType.getAxesNeeded()) {
-            System.out.println(" "); //TODO
+            strings.print("cantCutTrees", forestType.getAxesNeeded());
             return;
         }
         forestType.setSize(forestType.getSize() - 1);
@@ -145,7 +148,7 @@ public class Game {
 
     public void milkCow(Game game) {
         if (!game.getBuildings().contains(Item.FENCE_WITH_COWS)) {
-            System.out.println(" "); //TODO
+            strings.print("cantMilkCows");
             return;
         }
 
@@ -160,7 +163,7 @@ public class Game {
         long cheeseFactoryProducedMoney;
 
         if (!buildings.contains(item)) {
-            System.out.println(" cant produce"); //TODO
+            strings.print("cantProduce", item);
             return;
         }
         switch (item) {
diff --git a/src/main/java/cz/jull/Item.java b/src/main/java/cz/jull/Item.java
index 0967238..e04d9a1 100644
--- a/src/main/java/cz/jull/Item.java
+++ b/src/main/java/cz/jull/Item.java
@@ -96,7 +96,7 @@ public enum Item implements Buildable {
             if (game.getBuildings().stream().filter(building -> building == Item.VILLAGER_HOUSE).count() >= (game.getBuildings().stream().filter(building -> building == Item.FENCE_WITH_COWS).count() + 1) * 3) {
                 return true;
             }
-            System.out.println(" "); //TODO
+            game.getStrings().print("cantBeBuiltCows");
             return false;
         };
 
@@ -104,7 +104,7 @@ public enum Item implements Buildable {
             if (!game.getBuildings().contains(Item.CHURCH)) {
                 return true;
             }
-            System.out.println(" "); //TODO
+            game.getStrings().print("cantBeBuiltChurch");
             return false;
         };
 
@@ -112,13 +112,13 @@ public enum Item implements Buildable {
             if (game.getBuildings().contains(Item.CHURCH)) {
                 return true;
             }
-            System.out.println(" "); //TODO
+            game.getStrings().print("cantBeBuiltVillagerHouse");
             return false;
         };
 
         BAKERY.canBeBuiltFunction = game -> {
             if (!game.getBuildings().contains(Item.WHEAT_FARMLAND)) {
-                System.out.println(" "); // TODO
+                game.getStrings().print("cantBeBuiltBakery");
                 return false;
             }
             return true;
@@ -126,7 +126,7 @@ public enum Item implements Buildable {
 
         PUB.canBeBuiltFunction = game -> {
             if (!game.getBuildings().contains(Item.HOPS_FARMLAND)) {
-                System.out.println(" "); // TODO
+                game.getStrings().print("cantBeBuiltPub");
                 return false;
             }
             return true;
@@ -134,7 +134,7 @@ public enum Item implements Buildable {
 
         WINERY.canBeBuiltFunction = game -> {
             if (!game.getBuildings().contains(Item.VINEYARD)) {
-                System.out.println(" "); // TODO
+                game.getStrings().print("cantBeBuiltWinery");
                 return false;
             }
             return true;
@@ -142,7 +142,7 @@ public enum Item implements Buildable {
 
         CHEESE_FACTORY.canBeBuiltFunction = game -> {
             if (!game.getBuildings().contains(Item.FENCE_WITH_COWS)) {
-                System.out.println(" "); // TODO
+                game.getStrings().print("cantBeBuiltCheeseFactory");
                 return false;
             }
             return true;
@@ -152,7 +152,7 @@ public enum Item implements Buildable {
     static {
         VILLAGER_HOUSE.canBeBoughtFunction = game -> {
             if (!game.getBuildings().contains(Item.CHURCH)) {
-                System.out.println(" "); //TODO
+                game.getStrings().print("cantBeBoughtVillagerHouse");
                 return false;
             }
             return true;
@@ -160,7 +160,7 @@ public enum Item implements Buildable {
 
         Function<Game, Boolean> func = game -> {
             if (!game.getBuildings().contains(Item.VILLAGER_HOUSE)) {
-                System.out.println(" "); // TODO
+                game.getStrings().print("cantBeBoughtAll");
                 return false;
             }
             return true;
diff --git a/src/main/java/cz/jull/market/Market.java b/src/main/java/cz/jull/market/Market.java
index e419ee6..08665bd 100644
--- a/src/main/java/cz/jull/market/Market.java
+++ b/src/main/java/cz/jull/market/Market.java
@@ -20,7 +20,7 @@ public class Market {
 
     public void sellItem(Game game, Item item) {
         if (!game.getPlayer().getInventory().contains(item)) {
-            System.out.println(" "); // TODO
+            game.getStrings().print("cantSell");
             return;
         }
 
@@ -35,7 +35,7 @@ public class Market {
         }
 
         if (!item.getCanBeBoughtFunction().apply(game)) {
-            System.out.println(" "); //TODO
+            game.getStrings().print("cantBuy");
             return;
         }
         if (availableItems.contains(item)) {
diff --git a/src/main/java/cz/jull/stats/surroundings/ForestType.java b/src/main/java/cz/jull/stats/surroundings/ForestType.java
index b3a6935..2ec4687 100644
--- a/src/main/java/cz/jull/stats/surroundings/ForestType.java
+++ b/src/main/java/cz/jull/stats/surroundings/ForestType.java
@@ -12,7 +12,7 @@ public enum ForestType {
     MEDIUM("Medium",50, 3),
     LARGE("Large", 100, 5);
 
-    private String name;
+    private final String name;
 
     @Getter
     @Setter
diff --git a/src/main/java/cz/jull/tui/Strings.java b/src/main/java/cz/jull/tui/Strings.java
index 4c7c048..dbee79f 100644
--- a/src/main/java/cz/jull/tui/Strings.java
+++ b/src/main/java/cz/jull/tui/Strings.java
@@ -23,6 +23,22 @@ public class Strings {
     private String marketBuyMessage;
     private String marketSell;
     private String marketSellMessage;
+    private String cantBeBuiltCows;
+    private String cantBeBuiltChurch;
+    private String cantBeBuiltVillagerHouse;
+    private String cantBeBuiltBakery;
+    private String cantBeBuiltPub;
+    private String cantBeBuiltWinery;
+    private String cantBeBuiltCheeseFactory;
+    private String cantBeBoughtVillagerHouse;
+    private String cantBeBoughtAll;
+    private String cantBuild;
+    private String cantCutTrees;
+    private String cantMilkCows;
+    private String cantProduce;
+    private String cantSell;
+    private String cantBuy;
+
 
     /**
      * Loads strings from json file
diff --git a/strings.json b/strings.json
index f1a5f03..b9cb196 100644
--- a/strings.json
+++ b/strings.json
@@ -9,5 +9,20 @@
   "marketBuy": "Pick which item you want to buy",
   "marketBuyMessage": "You bought: {0}",
   "marketSell": "Pick which item you want to sell",
-  "marketSellMessage": "You sold: {0}"
+  "marketSellMessage": "You sold: {0}",
+  "cantBeBuiltCows": "First you need to build 3 villager houses before owning cows!",
+  "cantBeBuiltChurch": "You can`t have more than 1 church!",
+  "cantBeBuiltVillagerHouse": "First you need to built church before villager houses!",
+  "cantBeBuiltBakery": "First you need to built wheat farmland before a bakery! You need wheat you know!",
+  "cantBeBuiltPub": "First you need to built hops farmland before a pub! You need hops you know!",
+  "cantBeBuiltWinery": "First you need to built vineyard before a winery! You need grapevines you know!",
+  "cantBeBuiltCheeseFactory": "First you need to own cows before a cheese factory! You need milk you know!",
+  "cantBeBoughtVillagerHouse": "First you need to buy a church before villager houses!",
+  "cantBeBoughtAll": "Buy a villager house first!",
+  "cantBuild": "You don`t have that item in your inventory!",
+  "cantCutTrees": "You need {0} axes to cut trees!",
+  "cantMilkCows": "You don`t own any cows!",
+  "cantProduce": "You can`t produce when you dont have {0}",
+  "cantSell": "You can`t sell this item! You don`t have it!",
+  "cantBuy": "You can`t buy this item!"
 }
\ No newline at end of file