aaaa aaae aaap aaea aaep aaoe aaoo aapa aapo aapt aata aatt aeap aeta aeto aett aetx aopo apao apap apat apax apea apep apet apex apo- apoe apoo apop apot apox appa appt appx apta apte aptt aptx at-t at-x ataa atae atap atat atax atea atee ateo atep atex atoe atop atot atta atte atto attp axat axo- axoa axto axxo eaop eapp eata eate eeea eeee eeta eete eext eota eoto epaa epee epot epox eppa eppo eppp epta epte epxp etap etat etee etoe etox etta ette etto exa- exo- expo expt exta exte o-eo oate oeax oepa oeta ooaa oooo ootp opap opep opet opex opo- oppa oppo opto otap otea otee otep oto- otoe otoo otpp otta otte otto oxa- oxea oxep oxo- oxox oxxo paap paat paea paep paox papa pape papp pata pate pato patt paxo peap peat peax peep peet pepa pepe pepo peta pete peto pett poat poea poet poop poot pop- popa pope popo popp popt pota pote poto pott ppap ppoa pppa pppo pppp ppta pptt ptop ptox taa- taat taoa tapa tape tapo tapp tapt tata tate tato tatt tax- taxa taxe taxo taxt teat teet tepa tepe tepp teta tete teto tett tetx texa text toat toea toee toet tooa toot top- topa tope topo topp topt tota tote toto tott tox- toxa toxo toxt tpap tppa tppp tpte tptp tteo ttoe ttop tttt txaa xapo xate xexe xote xoxo xpax xpot xpto xtea xtep xxxo xxxx