a-ii aaaa aaab aaai aaap aaar aaba aabb aabi aabp aabt aaib aaii aapa aapi aapt aara aari aarp aart aata aatt abaa abab abai abap abar abat abax abb- abba abbb abbi abbr abbt abia abib abir abit abpa abpi abpp abpr abra abri abta aiai aiba aiia aiib aiir aipa aipi aira airi airp airt airx aita aiti aitr aitt aixa aixi apai apap apar apat apax apba apbr api- apia apip apit apix appa appr appt appx apra apri aprt apta apti aptt aptx arab arai arap arar arat arax arba arbi aria arib arii arip arit arpa arpi arr- arra arri arrr arrt arta arti artr artx at-t at-x ataa atab atai atap atar atat atax atia atip atit atpr atra atri atrp atrx atta atti attp attr axar axat axi- axia ba-i ba-x baaa baar baat baba babb babi babr baia baib bair bait baix bapa bapi bapp bapt bar- bara barb bari barr bart barx bata bati batt baxi baxt bbbb bbpr biap biar biat biba bibb bibi bipa bipp bira birb biri birr birt birx bita bitt bitx bixa bixi bpai bpti brab brai brat brax bria brit brix brrr btaa btbp btrt bttb iaaa iaai iaap iaat iaba iaia iapa iapp iapt iapx iara iart iata iati ibar ibat ibia ibra ibri ibtb iiii iiit iipa iira iita iitr iitt ipat ipba ipix ippa ippr ipri ipta irai irap irar irbp iri- iria irip irix irpa irra irri irta irti irtp itaa itai itap itar itat itia itpa itra itri itta ixia ixxi paap paar paat paba pabt pabx paia paib paip pair pait paix papa papb papi papp papr par- para pari parp parr part pata pati patr patt paxi pbar pbpa piai piat pibb pibi piia piip pipa pipi pipp pira piri pirr pita piti pitr pitt pitx pixx ppap ppar ppib pppa pppp ppta pptt prai prar prat pri- pria prii prix prri prti prtp prtr ptab raab raat raba rabb rabi raia raii raip rair rait raix rapa rapi rapp rapt rara rarb rari rata rati ratp ratt raxa raxi rbbb rbbr riaa riab riai riat rib- riba riia ripa ripi ripp ripr ript riri rita riti ritt rpii rpix rpta rrat rrrr rtai rtpa rttp taa- taar taat taba tabb tabi taia taip tair tait taix tapa tapi tapp tapr tapt tara tarb tari tarp tarr tart tata tatb tati tatr tatt tax- taxa taxi taxt tbar tbit tbrb tbta tbtp tiaa tiab tiar tiax tiba tibi tiit tip- tipa tipi tipp tipt tira tirb tiri tirr tita titi titp titt tixt tpap tpia tpir tppa tppp tppr tptp tptr traa trab trai trap trat trax tri- tria trib trip trit trix trpa trpp trra trtr ttab ttbb tttt txaa txii txtr xaar xait xapi xara xbai xbar xbra xiap xiii xita xixi xpax xpra xtar xtra xxii xxix xxxi xxxx