>>Hi Sergey
>>
>>(sheepish grin)
>>
>>You're right - I've been bitten by the comments after problem again. I excised the comments for the post for brevity.
>>
>>Man, you're good! even finding errors when the example's not complete! :-)
>>
>>Thanks again
>>
>>Terry
>
>That's a definition of the detective genius < g > To look straight into the root of every problem and analyze every bit of information and complete uncompleted pciture by using deduction method.

Like Sherlock Holmes said, something like: "When you have eliminated the obvious, whatever's left, no matter how improbable, must be the answer". Sergey's said to himself, "Ther's nothing wrong here - he must have had comments after. :-)"