The original data frame:
       B    C  D 
0     OE   EG  A
1     CA   EG  A
2     HA1  EG  A
3     HA2  EG  A
4  CB      EG  A
5     HB1  EG  A
The desired data frame:
       B    C  D 
0     OE   EG  A
1     CA   EG  A
2     HA1  EG  A
3     HA2  EG  A
4     CB   EG  A
5     HB1  EG  A
and I want to control spaces among columns!
 
    