Brain Meltdown.  Maybe someone can help.

I have a list such as (item1,item2,item3,item4,item5).  The list can be any
length.  Item1 would be the parent of item2 and item2 would be the parent of
item3 and so on.  

What's the most efficient way of determining the parent of any item in the
list and determining that item1 has no parent?

Thanks,
Emmet



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