EXTREMELY IMPORTANT!

Okay, So I have a contractors colomn for each job that is being done. I HAVE
to put multiple companies on ONE cell but when I graph it they need to be
seperated individually.

example.

"SPREADSHEET"
DATE JOB CONTRACTOR
1/1 1 A
1/2 2 B,A,C
1/3 3 C

when I graph how many time each contractor is used its...

"MY UNWANTED GRAPH"
contractor A.... 1 time
contractor B, A, C... 1 time
contractor C... 1 time


How, if at all possible can I make it...

"WHAT I WANT"
contractor A... 2 times
contractor B... 1 time
contractor C... 2 times