How to improve compare of item in sorted List<MyItem> with item before and after current item?

Does anyone know about a good way to accomplish this task?

Currently i'm doing it more ore less this way, but i'm feeling someway unhappy with this code, unable to say what i could immediately improve.

So if anyone has a smarter way of doing this job i would be happy to know.

private bool Check(List<MyItem> list)
bool result = true;
//MyItem implements IComparable<MyItem>
for (int pos = 0; pos < list.Count - 1; pos++)
bool previousCheckOk = true;
if (pos != 0)
if (!CheckCo

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