Finding only triple occurances of duplicate items

hmmm
use the formula button so you dont paste a formula over 4 lines....

not sure how your example came up to A7 when there are 6 lines of data

Formula:

=IFERROR(INDEX(A$1:A$6,SMALL(IF(FREQUENCY($A$1:$A$6*$B$1:$B$6/($A$1:$A$6+$B$1:$B$6),$A$1:$A$6*$B$1:$B$6/($A$1:$A$6+$B$1:$B$6))>2,ROW($A$1:$A$6)-MIN(ROW($A$1:$A$6))+1),ROWS($1:1))),"")

adjust the range accordingly