I have ran into a logic error that I cannot solve and would like some assistance towards it.
Here's my code 

```
Mysentence = MySentence 
print(Mysentence)
MysentenceList = Mysentence.split()
List = []

for k in MysentenceList:
    position = MysentenceList.index(k)
    position = position + 1
    position = str(position)
    List.append(position)

```

Basically cannot handle unique words