[thelist] Looping Psuedocode

[Rob Smith]

Hi,

I've struggled with this for quite some time now and still haven't found the
best approach to this. Basically I want to see some Psuedocode that solves:

 from ::   to ::
  Item A    Item A
  Item A    Item B
  Item A    Item C
  Item B
  Item B
  Item B
  Item B
  Item C
  Item C

Thanks

Rob.Smith