Since the comments and questions continued after I posted the 5 Number System, here is a COMPLETE list below IF you want to play DOUBLES with the 5 Number System:

Pick your 5 numbers just like you would in original system.  Make your first set of 10 numbers that is included with the instructions.  We will call those sets SINGLES

Here is how you would come up with your DOUBLES

ABA      CDC
ACA      CEC
ADA      DAD
AEA      DBD
BAB      DCD
BCB      DED
BDB      EAE
BEB      EBE
CAC      ECE
CBC      EDE

Once you have your set of 10 number SINGLES and then add the 20 number DOUBLES = you get a total of 30 sets to cover 5 digits.