a-ii aaaa aaai aaap aaar aaii aaoo aapa aapi aapo aara aari aaro aarp aiai aiia aiir aioi aipa aipi aira airi airo airp aopo aora apai apao apap apar api- apia apio apip apo- apoo apop apor appa appr apra apri apro arai arap arar aria arii ario arip aroa aroi aroo aror arpa arpi arr- arra arri arro arrr iaaa iaai iaap iaia iapa iapp iara iiii iiio iioi iioo iiop iipa iira ioii ioio iooi iooo iora iori ipop ippa ippo ippr ipri irai irao irap irar iri- iria irio irip irop irpa irra irri oapi oara oiii oira ooaa ooia oooo oora opap opar opia opii opio opo- opor oppa oppi oppo opra orai orao orar ori- oria orio oro- oror orpi orra orri orro paap paar paia paio paip pair papa papi papp papr par- para pari paro parp parr piai piao piia piip pipa pipi pipo pipp pira piri piro pirr poar poia poio poop poor pop- popa popi popo popp pora pori poro porr ppap ppar ppoa pppa pppo pppp prai prao prar pri- pria prii pro- proa proo prop prri raia raii raip rair raop rapa rapi rapp rara rari raro riaa riai riia ripa ripi ripp ripr riri roap roar roia roio roir rooi roop roor ropa ropo rora rori roro rpii rrrr