Letter on position 1 (t) changed: 13 words cons dons eons fons gons hons ions kons mons oons pons sons wons Letter on position 2 (o) changed: 4 words tans tens tins tuns Letter on position 3 (n) changed: 11 words tocs tods toes togs toms tops tors toss tots tows toys Letter on position 4 (s) changed: 4 words tone tong tonk tony