bbbb bbeb bcbc bccc bcec bcuc bebb bebe beby beck becu beeb beek beey beke beuk beye beyk beze bezu bkcy bubb bube bubu bucc buce buck bucu bucz bueu buke bukk buku buky buuz buyu buze buzy buzz byce byck byke bzyb bzzz cbbc cbcc cbce cbcu cbec cbee ccbc cccb cccc cccu ccee ccuc cebu cec- cece ceeb ceec ceke ceyu ceze cezy ckbc ckbe ckck ckcy ckey cub- cubb cube cuby cucc cuce cuck cuek cuk- cuke cuy- cuzy cybb cybc cyc- cycb cycc cyke cyy- cyyc czyz ebbc ebby ebcc ecbc ecbe eccb eccc ecce ecky eeby eeee eeke eeze ekeb ekek eubc eyck eyeb eyec eyey eyez eyke ezek ezuz kbbb kbbc kbbe kbbk kbbu kbbz kbcb kbce kbck kbcu kbcy kbcz kbeb kbec kbee kbek kbey kbez kbkb kbkk kbky kbkz kbub kbuc kbue kbuk kbuu kbuy kbuz kbyb kbyu kbyz kbzc kbze kbzu kbzy kbzz kcbc kcbk kcbu kccb kccc kcck kccu kccy kceb kcec kcee kceu kcey kcez kckc kckk kcky kckz kcub kcue kcuk kcuz kcye kcyk kcyy kcyz kcze kczz kebb kebc kebe kebu keck keek kekb kekc keke keku keyb keye keyu keyy keyz kezb keze kezy kezz kkbb kkbe kkbz kkcb kkck kkcy kkez kkkk kkuu kkyc kkyy kkyz kkzu kkzy kkzz kubb kubc kube kubu kuby kucb kucc kuce kuek kueu kuke kukk kuku kuky kuub kuuk kuuu kuuz kuyu kuyy kuze kuzu kuzz kybb kybc kybe kyby kycc kyck kyee kyez kykc kyke kykk kyky kykz kyuk kyuu kyyk kyyy kyyz kyzk kyzz kzbb kzbe kzbk kzbz kzee kzey kzke kzky kzkz kzue kzuu kzuz kzzb kzzk kzzy kzzz ubbe ubek ucbc ucky ukcc ukek ukeu ukky uuuu uzeb yccc ycee ye-u yeck yeek yeke yeue yeuk yeye ykey yubu yuce yuck yuke yuku yuky yuye yuyu yuzu yyyy zbek zebe zebu zeck zeek zeke zeku zeze zubu zuby zuce zuck zuke zuuk zuzu zyke zzzz