Letter on position 1 (b) changed: 6 words aals dals gals mals pals sals Letter on position 2 (a) changed: 1 word bels Letter on position 3 (l) changed: 11 words baas bacs bads bags bams bans baps bars bass bats bays Letter on position 4 (s) changed: 6 words bald bale balk ball balm balu