Complex dissolve - dealing with comma separted values

Hello,

I am trying to figure out the best way to dissolve by attribute when the field may contain more than one value. For example, I have a list of parcels that may have several ditches assigned to that parcel. I would like to create a layer that shows which parcels contain ditch #1, which contain ditch #2 etc.

Parcel Ditches
42-001 1,2
42-002 1
42-003 2,3
42-004 1,2,3
42-005 2
42-006 3

Expected Result
Ditch 1 - contains the area for parcel 42-001, 42-002, 42-004
Ditch 2 - contains the area for parcel 42-001, 42-003, 42-004, 42-005
Ditch 3 - contains the area for parcel 42-003, 42-004, 42-006

Thanks