Letter on position 1 (m) changed: 11 words bugs dugs fugs hugs jugs lugs pugs rugs tugs vugs yugs Letter on position 2 (u) changed: 4 words mags megs migs mogs Letter on position 3 (g) changed: 5 words muds mums muns muss muts Letter on position 4 (s) changed: 1 word mugg