Try..........
In E16, array formula copy down :
=IFERROR(INDEX(F$7:F$14,SMALL(IF(INDEX(G$7:AG$14,,MATCH(B$2,G$5:AG$5,0)+MATCH(B$3,G$6:I$6,0)-1)="Y",ROW(F$7:F$14)-ROW(F$7)+1),ROWS($1:1))),"")
P.s. array formula should be confirmed enter in press with SHIFT+CTRL+ENTER 3 keystrokes together.
Regards
Bosco