QUADRUPLET

ad ae al ar at de ed el er et la pa pe re ta up ut

ale alp alt ape apt are art ate dal dap del due dup ear eat eau eld era eta lad lap lar lat lea led let leu pad pal par pat pea ped per pet pud pul pur put qat qua rad rap rat red rep ret rue rut tad tae tap tar tau tea ted tel tup ulu urd urp uta ute

aped aper auld dale dare dart date daut deal dear delt drat dual duel duet dupe dura dure earl lade lard late latu laud lead leap lear lept leud luau lude lure lute pale pard pare part pate peal pear peat pelt pert plat plea pled prat prau pula pule pure purl quad rale rape rapt rate read real reap rude rued rule tael tale tape tare tarp teal tear tela tepa trad trap true tule turd urea