-ana -ane -ene a-be aaaa aaab aaae aaan aaba aabb aabt aaea aaen aana aane aata aatt abaa abab abae aban abat abax abb- abba abbb abbe abbt abee aben abet abta aean aebn aena aent aeta aetn aett aetx ana- anaa anab anae anan anat anax anba anbb anee anen anet anex anna annb anne annt ant- anta ante antt at-t at-x ataa atab atae atan atat atax atea atee aten atex atna atta atte attn axan axat axen ba-x baaa baan baat baba babb babe bana bane bann bant bata bate batn batt baxt bbbb bbeb bbet bean beat beba bebb bebe beeb been beet bena bene benn bent beta bete bett bnet bnta btaa btan bten btex bttb eaba eana eata eate eban ebba eben eeea eeee eena eent eeta eete eext enab enan enat enb- enbn enea enee enna enne ent- ente etan etat etee eten etna etne etta ette ettn exa- exan exen exta exte naaa naab naan naat naba nabe naea nan- nana nanb nane nann nant nata nate natt natx nbaa neab nean neat neba nebb nebe nebn neea neeb neen neet nena nene nent net- neta netb nete nett nexe next nexx nnnn nntn taa- taan taat taba tabb tabe taen tana tane tann tant tanx tata tatb tate tatt tax- taxa taxe taxt tbta tean teat teba teen teet tena tenb tene tenn tent teta tete tett tetx texa text tneb ttab ttbb tten tttt txaa txen xana xate xbee xen- xena xene xenn xexe xnee xnet xtea xxxx