Letter on position 1 (t) changed: 7 words ceas keas leas peas seas yeas zeas Letter on position 2 (e) changed: 1 word twas Letter on position 3 (a) changed: 10 words tecs teds tees tefs tegs tels tems tens tets tews Letter on position 4 (s) changed: 6 words tead teak teal team tear teat