Previous solution:
apt, art, arty, par, part, party, pat, pay, prat, pray, pry, pya, rap, rapt, rat, ray, tap, tar, tarp, trap, tray, try, yap
apt, art, arty, par, part, party, pat, pay, prat, pray, pry, pya, rap, rapt, rat, ray, tap, tar, tarp, trap, tray, try, yap