i have some values in col A in range A2:A12. some values are appearing
more than once. i have put a formula in col B to show values only
once.

=IF(COUNTIF($A$2:$A$12,A2)1,IF(ISNA(VLOOKUP(A2,$B $2:B2,1)),A2,"-"))

what i meant from this formula is:

if value in A2 is appearing more that once in range A2:A12 then check
in col B in all preceding cells that has it appeared in that range, if
appeared return "-" otherwise value in cell A.

but this gives error of circular refrence. i changed it many times to
correct it but of no avail.
how can i make this formula correct

thanks in anticipation


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starguy
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