Extract information Crystal Reports

I have a column named "comment" from a table named "Journal" with data that looks like this.

Comment
Reg:    5 Chq:030048 Sup:HEW010  Bank:01 Inv:INVS3857592    
Jnl:   19 Inv:JMVERSAILLES6/7/12   Sup:MIN010              
Jnl:   19 Inv:CDIMEDIOo6/7/12      Sup:MIN010              
Jnl:   19 Inv:MANOLI6/7/12         Sup:NAT012          
Jnl:   19 Inv:CDIMEDIO6/7/12       Sup:DIM010              

Using this formula mid([Comment], instr([Comment], "Sup:")+4, 6)

I was able to extract this data


HEW010
MIN010  
MIN010
NAT012
DIM010


Now I have the same column with this

Comment
Reg:  193 Bank:01Supplier :BLA010                          
Reg:  193 Bank:01Supplier :CHA010                          
Reg:  193 Bank:01Supplier :CHE010                          
Reg:  193 Bank:01Supplier :COR010                          
Reg:  193 Bank:01Supplier :DAV010                          

How do I change the formula to get the new codes?

I want these results

BLA010
CHA010
CHE010
COR010
DAV010

Thank you,

MrWeen