Grrr. You changed the question... My first works with Post 1. This with Post 3

=SUBSTITUTE(SUBSTITUTE(SUBSTITUTE(SUBSTITUTE(SUBSTITUTE(SUBSTITUTE(B1,MID(A1,1,1),""),MID(A1,2,1),""),MID(A1,3,1),""),MID(C1,1,1),""),MID(C1,2,1),""),MID(C1,3,1),"")