remove list elements..

Abandoned besturk at
Fri Oct 5 16:27:39 CEST 2007

I have a problem..
list1=[11, 223, 334, 4223...] 1 million element
list2=[22,223,4223,2355...] 500.000 element

I want to difference list1 to list2 but order very importent..

My result must be:

I do this use FOR easly but the speed very imported for me. I want to
the fastest method please help me.

I'm sorry my bad english.

King regards..

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