a-ha aaaa aaab aaah aaap aaba aabb aabh aabp aaha aaoo aapa aaph aapo abaa abab abap abb- abba abbb abbo abha abho aboa abob aboh aboo abpa abpp ahab ahah ahha ahoa ahop aoah aoba aopo apah apao apap apba aph- apha apo- apoo apop appa apph baaa baah baba babb babo baha baho baoh bapa bapp bbbb bhao boab boba bobb bobo boha boho boob booh boop bopa bopp haab haba habo haha haho hapa happ hhaa hhhh hhpa hoap hoba hobo hoha hoho hoop hopa hopo hopp hpao oahp oaph obba obbo ohba ohho ohob ohoh ooaa ooba ooha ooho oooh oooo opah opap opo- oppa oppo paap paba paha paho pahp paoh papa papb papp pbpa phah phob phoh phoo phpa poba pobo poha pooh poop pop- popa popo popp ppap ppoa pppa pppo pppp