Canonicalized Input Description:

Two strings, S' and T.

1 ≤ |S'|, |T| ≤ 50
S' consists of lowercase English letters and '?'.
T consists of lowercase English letters.

### Example Input:

```
?tc????
coder
```

### Function Signature:
Write a function f(S_prime, T) that takes in the input.
def f(S_prime: str, T: str):
    ''' 
    S_prime: a string 
    T: a string
    '''