-ase a-be aaaa aaab aaae aaar aaas aaba aabb aaea aaes aara aare aars aasa aase aass abaa abab abae abar abas abax abb- abba abbb abbe abbr abbs abee aber abes abra abrs abs- absa abse abss aeas aebs aeer aer- aera aers aess arab arae arar aras arax arba arbe arbs area aree ares arex arr- arra arre arrr arrs ars- arsa arse asaa asab asae asar asas asba asea asee aser ases asra asrs assa asse assr asss axar axer axes axse ba-x baaa baar baas baba babb babe babr babs baer baes bar- bara barb bare barr bars barx basa base bass bbas bbbb bbbs bbeb bear beas beba bebb bebe beeb beer bees bera bere berr bers bes- besa bese bess brab brae bras brax brea breb bree brer bres brex brrr brrs brsb brsr bsaa bsas bsea bseb bsee bser bses bsra bsse eaba eara earb eare ears easa ease ebba ebbr ebbs eber ebes ebsa eeea eeee eees eera eers eese er-x eras erba erbb erbe ereb erer eres erra erre errs ersa erse esab esar esas esba esbs esea esee eser eses esra essa esse exa- exer exes exrx raab raas raba rabb rabe rabs raer raes rara rarb rare rars rasa rase rass raxa rbbb rbbr rbbs rbss rea- reae rear reas reba rebb rebe rebs reeb rees rera rere rers resa rese ress rexx rras rrrr rsaa rsee rsre rssa rxes sa-x saab saae saar saas saba sabb sabe sabr sabs saeb saer saes saex sara sare sarr sars sasa sase sass saxa saxe sbaa sbar sbas sbbs sber sbsa sbse se-e se-s se-x seaa seab sear seas seax seba sebe sebs seea seeb seer sees seex sera serb sere serr sers sesa sese sess sex- sexe sras sreb sres ssaa ssab ssas ssbr ssee sses ssex ssra ssrs sssa sssb ssss xaar xara xare xbar xbee xbra xeer xer- xera xers xexe xxxx