aaaa aaap aaar aaav aaoo aapa aapo aapt aara aaro aarp aart aata aatt aava aopo aora aort apao apap apar apat apax apo- apoo apop apor apot apox appa appr appt appx apra apro aprt apta aptt aptv aptx arap arar arat arax aroa aroo aror arpa arr- arra arro arrr arrt arta arto artr artv artx arva arvo at-t at-x ataa atap atar atat atax atop ator atot atpr atra atro atrp atrx atta atto attp attr avao avar avat avax avor avot avpx avra avro avva avvo axar axat axo- axoa axto axxo oara ooaa oooo oora oort ootp opap opar opo- opor oppa oppo opra opto orao orar orat orav oro- oror orot orra orro orta orto orvr otap otar oto- otoo otor otov otpp otra otro otta otto ovar ovo- ovoo ovot ovpp ovra oxa- oxo- oxox oxxo paap paar paat paox papa papp papr par- para paro parp parr part parv pata pato patr patt pava pavo paxo poar poat poop poor poot pop- popa popo popp popt pora poro porr port pota poto pott povo ppap ppar ppoa pppa pppo pppp ppta pptt pptv prao prar prat pro- proa proo prop prot prov prox prtp prtr ptop ptox pvpa pxtv raat raop rapa rapp rapt rara raro rata rato ratp ratt rava raxa roap roar roat roop roor root roox ropa ropo rora roro rort rota roto rotr rott rova rovo roxa roxo rpta rrat rrrr rtpa rttp rtva rxvt taa- taar taat taoa taor tapa tapo tapp tapr tapt tara taro tarp tarr tart tata tato tatr tatt tatv tava tavo tax- taxa taxo taxt toat tooa toor toot top- topa topo topp topt topv tora toro torp torr tort torv torx tota toto totr tott tova tovo tox- toxa toxo toxt tpap tppa tppp tppr tptp tptr traa trao trap trat trav trax troa troo trop trot trox trpa trpp trpv trra trtr ttop tttt tvpa tvro tvrr tvtv txaa txtr vaar vaat vapa vara varp varr vart vata vato vatt vava voar voat voor voot vopt vor- vora voro vort vota voto votp voxx vpat vpro vrap vrav vrot vrto vrtx vt-x vtap vtpr vvvv xaar xapo xara xoro xorp xoxo xpax xpot xpra xpto xtar xtra xtro xxxo xxxv xxxx