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This is very interesting solution. Just note the OP wanted -1,0,+1 values.
– kolcinx
Commented Dec 17, 2016 at 11:33
His original erroneous IF() did use -1, 0, 1, but his text asked for 0, 1, 2. To get -1, 0, 1, he'd just need to do an additional subtraction of 1 afterward: =((SEARCH(A1,"WTATAB")-1)/2)-1
– Jeff Zeitlin
Commented Dec 19, 2016 at 15:33

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