-ene bbbb bbch bbdd bbeb bcbc bccc bcde bcec bchd bche bcnu bcuc bdbc bddc bddh bebb bebe bech becu bede bedu beeb beed been behn bend bene benn benu bhcc bhuu bubb bube bubu bucc buce buch bucu budb budd bude budu buen bueu buhe bunb bund bune bunn bunu c-cd cbbc cbcc cbce cbcn cbcu cbdb cbdc cbdn cbec cbee cbnd ccbc ccbn cccb cccc cccu ccdc ccdh ccdn cced ccee cche ccnb ccnc ccne ccnu ccuc cd-e cddb cdec cdnb cdnc cebu cec- cece cedd cede cedu ceeb ceec cen- cend cene chce chch cheb chec ched chee cheh chen cheu chnb chnc chub chud chun cnbc cndd cub- cubb cube cucc cuce cucn cude cued cund cune dbcc dcbc dccb dccc dccu dcdb dche dddd ddub debe debu dec- decc decd dece dedd dede dedu deeb deed deen dehn dehu dene denn denu deue dhec dhed dhee dhun dnce dub- dubb dubc dube dubh dubu duce duch dudd dude dudu duhe duhu dunc dune dunn ebbc ebcc ebed eben ecbc ecbe eccb eccc ecce ecdc eced eche ecne eddc edde ede- edeh eden educ edun eede eedu eeee eend ehcc ehdd eheh ehen eheu ehud enb- enbn ence ench end- ende endh endu ened enee ennc enne ennu enue eubc eucd euch eude hbcd hcbc hccb hccc hcch hebb hebe hech hedd hede heeb heed hehe hehn hend hene henh henn henu heue heun hhhh hnce hndd hubb hube huch hucu hudd hude hudu hued huhn huhu hunc hund hune hunh huub nbbc nbcc nbhd ncbc nccc nccn nccu ncdc ncdn ncdu ncec nced ncee ncen nchc nchd ncnc ncnd ncue ndcc nddb ndde nebb nebe nebn nebu necc nece nech nedc nedd nede nedu neeb need neen nehe nehu nend nene nenh nenu neuc neue neun neuu nhcc nheb nhnn nndb nnnn nubc nube nuce nuch nucu nudc nudd nude nuee nunc nune nunn ubbe ubud ucbc ucdc ucdd uche udbc uden udun uend uh-d uhde uhuh unbd unbe uncc unce unch unde uneb unec uned unee unen unne uuen uuuu