b-u bbb bbc bbe bbk bbl bbn bbs bbu bcb bcc bce bck bcl bcn bcs bcu be- beb bec bee bek bel ben bes beu bkb bkc bke bkk bkl bkn bks blb blc ble blk bll bln bls blu bnb bnc bne bnk bnl bnn bns bnu bsb bsc bse bsk bsl bsn bss bsu bub buc bue buk bul bun bus buu c-- cbb cbc cbe cbk cbl cbn cbs cbu ccb ccc cce cck ccl ccn ccs ccu ce- ceb cec cee cek cel cen ces ceu ckb ckc cks cl- clb clc cle clk cll cln cls clu cn- cnb cnc cne cnl cnn cns cnu csb csc cse csk csl csn css csu cub cuc cue cuk cul cun cus cuu ebb ebc ebe ebk ebl ebn ebs ebu ec- ecb ecc ece eck ecl ecn ecs ecu eeb eec eee eek eel een ees ekb ekc eke ekl eks eku elb elc ele elk ell eln els elu en- enb enc ene enk enl enn ens enu es- esb esc ese esk esl esn ess esu eu- eub euc eue eul eun eus kbb kbc kbe kbk kbl kbn kbs kbu kcb kcc kce kck kcl kcn kcs kcu ke- keb kec kee kek kel ken kes kkb kkc kke kkk kkl kkn kks kku kl- klb klc kls klu kn- knc kne knk knl knn knu ksb ksc kse ksk ksl ksn kss ksu kub kuc kue kuk kul kun kus kuu lbb lbc lbe lbk lbl lbs lbu lcb lcc lce lck lcl lcn lcs lcu leb lec lee lek lel len les leu lkb lkl lks llb llc lle llk lll lln lls llu lnb lnc lne lnk lnl lnn lns lnu lsb lsc lse lsk lsl lsn lss lsu lub luc lue luk lul lun lus luu nbb nbc nbe nbk nbl nbn nbs nbu ncb ncc nce nck ncl ncn ncs ncu ne- neb nec nee nek nel nen nes neu nkc nke nkk nkn nks nku nlb nlc nle nlk nll nln nls nlu nnb nnc nne nnk nnl nnn nns nnu nsb nsc nse nsk nsl nsn nss nsu nub nuc nue nuk nul nun nus nuu sbb sbc sbe sbk sbl sbn sbs sbu scb scc sce sck scl scn scs scu se- seb sec see sek sel sen ses seu sk- skb skc ske skk skl sks sku slb slc sle slk sll sln sls slu snb snc sne snk snl snn sns snu ss- ssb ssc sse ssk ssl ssn sss ssu sub suc sue suk sul sun sus suu ubb ubc ube ubk ubl ubn ubs ubu ucb ucc uce uck ucl ucn ucs ucu ueb uec uee uel uen ues ukb ukc uke ukk ukl ukn uku ulb ulc ule ulk ull uln uls ulu un- unb unc une unk unl unn uns unu usb usc use usk usl usn uss usu uuc uue uun uus uuu

-ene bbbb bbbs bbeb bblb bbls bcbc bcbs bccc bccl bccs bcec bces bcnu bcsc bcsl bcsn bcss bcuc bebb bebe beck becs becu beeb beek beel been bees beke beks bele belk bell bels belu bene benk benn bens benu bes- bese besk bess beuk blcu bleb blee blek bles bleu blkb blls blss blub blue blus bnss bscs bseb bsec bsee bses bslc bsns bssc bsse bubb bube bubs bubu bucc buce buck bucs bucu buel buen bueu buke bukk buku bulb bule bulk bull buls bulu bunb bune bunk bunn buns bunu busc buse busk buss busu buus cbbc cbbs cbcc cbce cbcl cbcn cbcs cbcu cbec cbee cbkl cbkn cblb cblc cbln cbsc cbse cbsn cbus ccbc ccbn cccb cccc cccl cccs cccu ccee ccel cclc ccls ccnb ccnc ccne ccns ccnu ccsl ccsn ccss ccuc ccus cebs cebu cec- cece cecs ceeb ceec ceel cees ceke cel- celc cele cell cels cen- cene cens cesc cese cess ckbc ckbe ckck ckcl ckcs cken ckln cknb cknc ckns cksb cksl clec clee clek cles cleu clsc club clue clun cnbc cnbl cnel cnes cnsl cnss cscb cscc csce cscl cscs csec csee csks cslu csne csse csus cub- cubb cube cubs cucc cuce cuck cucn cuek cues cuk- cuke culb culc cule culk cull culs cune cusb cusk cuss cusu e-cl ebbc ebbs ebcc ebel eben ebes ebul ebus ecbc ecbe eccb eccc ecce eccl eces ecks ecne ecsc ecse ecss ecsu ecus eecs eeee eees eeke eeks eele eels eens eese eesk ekeb ekek eken ekes ekne el-b elbe elbu elcb elce elec elee elek elen eles elke elks elle ells ellu elne else elsu elue elul elus enb- enbn ence encl encs enee enel enes enke enls ennc enne enns ennu ense ensu enue enus esbs escb esce escs escu esee esek esel esen eses eske esks esku esne esse essl essu esus eubc eule euse kbbb kbbc kbbe kbbk kbbl kbbs kbbu kbcb kbce kbck kbcl kbcs kbcu kbeb kbec kbee kbek kbel kben kbes kbkb kbkk kbkl kblb kble kbll kbls kblu kbnl kbnn kbnu kbsb kbsk kbsn kbss kbsu kbub kbuc kbue kbuk kbul kbun kbus kbuu kcbc kcbk kcbl kcbs kcbu kccb kccc kcck kccl kccu kceb kcec kcee kcel kceu kckc kckk kckl kckn kclc kcle kclk kcll kcln kcls kclu kcnb kcns kcsb kcsc kcse kcsn kcss kcsu kcub kcue kcuk kcul kebb kebc kebe kebn kebu keck keek keel keen kees kekb kekc keke kekl keks keku kele kelk kell keln kelu ken- kene kenk kenl kenn kens kenu kesb kesc kesk kesn kess keul keun keus kkbb kkbe kkbl kkbn kkbs kkcb kkck kkcl kkcn kkcs kken kkkk kklb kklc kkll kkln kkls kknb kkne kknn kkns kknu kkse kksn kkss kksu kkus kkuu klbb klbc klbe klbl klbn klbs klbu klcb klcc klce klck klcl klcn klcs kleb klec klee klek klen kles klkc klkk klkl klkn klks kllb kllc klle kllk klls klnc klne klnn klsc klse klsn