Requested WoW macro

I would like the macro to have a cast sequence of Corruption, Curse of Enfeeblement and if the target already has either of these on them then the macro either resets or makes the one with out the debuff the one to be casted next.

Like, if a rabbit has Curse of Enfeeblement it'll choose Corruption to be casted next.

If a rabbit has neither of these it'll cast the sequence.

IF the rabbit has Corruption on it, it'll have Curse of Enfeeblement.

Something a long these lines will help, it'll help me learn macro too.