best 6 group,12 and 18 groups for each expansion ?

so best 6,12,18 groupsfor each expansion up to pop ?

Are you asking for Rizlona box-army class choice recommendations or something?

He is asking for Aradune botting.

I'd start with 18 rogues if I were you and then go from there.

maybe 18 mages or necros.
what i would do group 1,warrior,cleric,druid,mage,mage,bard,group 2, warrior,cleric,shammie,necro.necro,enchanter,group 3,paladin.cleric,wizard,necro.necro.necro from classic to luclin.theres a porter in each group,snare,2 slowers,mind candy healing etc.

If you are planning on taking on raid bosses I would go with something like.

4 Warriors (Defensive rotation)
4 Clerics (Limited CH rotation)
4 Monks
3 Bard
1 Bst
1 Sham
1 Enc

G1 - 2War, 2 Clr, Brd, Bst
G2 - 2War, 2 Clr, Brd, Enc
G3 - 4Mnk, Shm, Brd

The above offers little utility and classic is vastly different to PoP, but should have a decent chance of taking on raid mobs. A wizard could take the place of a monk for ports and offer solid DPS in Luclin/PoP.