I have a dataframe with a columns which has a string of words -

```
df['col1']

0         Anton burt 
1         fred foe hip
2         mark helm schuffer Leib 

```

I need a new column "col2" with the first alphabets of all the words in the "col1". What I want is -

```
col1                      col2 

Anton burt                A b
fred foe hip              f f h
mark helm schuffer Leib   m h s L

```

How can I get this ?