|  | 
Survival Tool | 
Multi Tool | 
Key Tool | 
| 
Knife blade | 
            · | 
            · | 
            · | 
| 
Saw |  | 
            · | 
            · | 
| 
Screwdriver | 
            · |  | 
            · | 
| 
Bottle opener | 
            · | 
            · | 
            · | 
| 
Can opener | 
            · | 
            · |  | 
| 
Ruler | 
            · |  |  | 
| 
Pick | 
            · |  |  | 
| 
Wrench | 
            · |  |  | 
| 
Hammer |  | 
            · |  | 
| 
Pilers |  | 
            · | 
            · | 
1) survival tool
- the survival tool has a knife blade, but it doesn`t have a hammer.
- the survival tool has a can opener, but it doesn´t have a saw.
- the survival tool has a pick, but the Multi tool doesn´t.
- the survival tool has a ruler, but the Key tool does´t.
- the survival tool has a bottle opener and also the Multi tool.
2) Multi tool
- the multi tool has a saw, but the survival tool doesn´t.
- the multi tool has a can opener, but the key tool doesn´t.
- the multi tool has a pilers and also the key tool.
- the multi tool has a hammer, but it doesn´t have ruler.
- the multi tool has a screwdriver, but it doesn´t have a pick.
3) Key tool
- the key tool has a bottler opener, but it doesn´t have a wrench.
- the key tool has a pilers, but it doesn´t have a can opener.
- the key tool has a saw, but the survival tool doesn´t.
- the key tool has a screwdriver, but the multi tool doesn´t.
- the key tool has a bottle opener, but the survival and multi tool does.
