bbbb bbeb bbet bcbc bccc bcec bcet bctc bcuc bebb bebe beby beck becu beeb beek beet beey beke betc bete bett betu beuk beye beyk beyt bkcy btcc btec btek bttb bubb bube bubu bucc buce buck bucu bueu buke bukk buku buky but- bute butt buty buyu byce byck byke byte cbbc cbcc cbce cbct cbcu cbec cbee cbet cbtc cbyt ccbc cccb cccc cccu ccee cctb cctc cctt ccuc ccut cebu cec- cece cect ceeb ceec ceke cet- cete ceyu ckbc ckbe ckck ckcy ckey cktb ckty ctec cub- cubb cube cuby cucc cuce cuck cuek cuk- cuke cut- cutc cute cutt cuy- cybb cybc cyc- cycb cycc cyke cyt- cytb cyte cyy- cyyc ebbc ebby ebcc ecbc ecbe eccb eccc ecce ecct ecky ect- ectc eeby eeee eeke eetc eete eetu ekeb ekek eket etbc etcc etec etee ette ettu etty eubc eyck eyeb eyec eyet eyey eyke eyte kbbb kbbc kbbe kbbk kbbt kbbu kbcb kbce kbck kbct kbcu kbcy kbeb kbec kbee kbek kbet kbey kbkb kbkk kbky kbtb kbtc kbte kbtk kbtt kbub kbuc kbue kbuk kbut kbuu kbuy kbyb kbyu kcbc kcbk kcbu kccb kccc kcck kcct kccu kccy kceb kcec kcee kcet kceu kcey kckc kckk kcky kctb kctc kcte kctu kcty kcub kcue kcuk kcye kcyk kcyt kcyy kebb kebc kebe kebt kebu keck keek keet kekb kekc keke keku ket- ketc kete ketk kett ketu kety keyb keye keyu keyy kkbb kkbe kkbt kkcb kkck kkct kkcy kkkk kktc kktk kktu kkty kkut kkuu kkyc kkyy ktbb ktbc ktbt ktbu ktby ktcc ktce ktck ktcy ktec ktee ktek ktkb ktkc ktke ktkk ktkt ktku kttc kttk kttt kttu ktty ktub ktuc kubb kubc kube kubu kuby kucb kucc kuce kuek kueu kuke kukk kuku kuky kute kutt kutu kuty kuub kuuk kuuu kuyu kuyy kybb kybc kybe kyby kycc kyck kyct kyee kyet kykc kyke kykk kyky kytc kyte kytt kyty kyuk kyuu kyyk kyyt kyyy tbcb tbcc tbce tcby tccc tccu tctc tebu teck tect teec teek teet teke tete tett tetu teuk teut teye teyk tkey ttbb tttt tubb tube tubu tucc tuck tuet tuey tuke tute tutt tutu tuty tuye tyce tyck tyee tyek tyet tyke tyte tytt tyty ubbe ubek ubet ucbc ucky ucut ukcc ukek ukeu ukky utby utec uttu uuuu ybet yccc ycee yctc ye-u yeck yeek yeet yeke yete yett yeue yeuk yeye ykey ykut ykyt ytky yubu yuce yuck yuke yuku yuky yute yutu yuty yuye yuyu yyyy