B3=IFERROR(LOOKUP(1,0/(MMULT(1-ISERR(FIND(MID(A3,COLUMN($A:$H),1),A$2:A2)),ROW(1:8)^0)=8)/(LEN(A$2:A2)=LEN(A3)),B$2:B2),ROW())
D3:E8{=IFERROR(INDEX($A:$A,RIGHT(SMALL(IF(COUNTIF($B:$B,$B$3:$B$11)>1,$B$3:$B$11/1%+ROW($3:$11)),ROW(A1)*2-2+COLUMN(A1)),2)),"")
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