a-ii aaaa aaai aaap aaar aaii aapa aapi aara aari aarp aiai aiia aiir aipa aipi aira airi airp airx aixa aixi apai apap apar apax api- apia apip apix appa appr appx apra apri arai arap arar arax aria arii arip arpa arpi arr- arra arri arrr axar axi- axia iaaa iaai iaap iaia iapa iapp iapx iara iiii iipa iira ipix ippa ippr ipri irai irap irar iri- iria irip irix irpa irra irri ixia ixxi paap paar paia paip pair paix papa papi papp papr par- para pari parp parr paxi piai piia piip pipa pipi pipp pira piri pirr pixx ppap ppar pppa pppp prai prar pri- pria prii prix prri raia raii raip rair raix rapa rapi rapp rara rari raxa raxi riaa riai riia ripa ripi ripp ripr riri rpii rpix rrrr xaar xapi xara xiap xiii xixi xpax xpra xxii xxix xxxi xxxx