-er b-u bbb bbc bbe bbh bbl bbr bbs bbu bcb bcc bce bch bcl bcr bcs bcu be- beb bec bee beh bel ber bes beu bhb bhc bhe bhh bhl bhr bhs bhu blb blc ble blh bll blr bls blu brb bre brh brl brr brs bru bsb bsc bse bsh bsl bsr bss bsu bub buc bue buh bul bur bus buu c-- cbb cbc cbe cbh cbl cbr cbs cbu ccb ccc cce cch ccl ccr ccs ccu ce- ceb cec cee ceh cel cer ces ceu ch- chb chc che chh chl chr chs chu cl- clb clc cle clh cll clr cls clu crb crc cre crh crl crr crs cru csb csc cse csh csl csr css csu cub cuc cue cuh cul cur cus cuu ebb ebc ebe ebh ebl ebr ebs ebu ec- ecb ecc ece ech ecl ecr ecs ecu eeb eec eee eel eer ees ehb ehc ehe ehh ehl ehr ehs ehu elb elc ele elh ell elr els elu erb erc ere erh erl err ers eru es- esb esc ese esh esl esr ess esu eu- eub euc eue eul eur eus hbb hbc hbe hbh hbl hbr hbs hbu hcb hcc hce hch hcl hcr hcs he- heb hec hee heh hel her hes heu hhb hhc hhe hhh hhl hhr hhs hhu hlb hlc hle hlh hll hlr hls hlu hr- hrb hrc hre hrh hrl hrr hrs hru hsb hsc hse hsh hsl hsr hss hsu hub huc hue huh hul hur hus huu lbb lbc lbe lbh lbl lbr lbs lbu lcb lcc lce lch lcl lcr lcs lcu leb lec lee leh lel ler les leu lhb lhc lhh lhr lhs lhu llb llc lle lll llr lls llu lrb lrc lrh lrr lrs lru lsb lsc lse lsh lsl lsr lss lsu lub luc lue luh lul lur lus luu rbb rbc rbe rbh rbl rbr rbs rbu rcb rcc rce rch rcl rcr rcs rcu re- reb rec ree reh rel rer res reu rh- rhb rhc rhe rhh rhl rhr rhs rhu rlc rle rlh rll rlr rls rlu rrb rrc rrh rrl rrr rrs rru rsb rsc rse rsh rsl rsr rss rsu rub ruc rue ruh rur rus ruu sbb sbc sbe sbh sbl sbr sbs sbu scb scc sce sch scl scr scs scu se- seb sec see seh sel ser ses seu sh- shb shc she shh shl shr shs shu slb slc sle slh sll slr sls slu sr- srb src sre srh srl srr srs ss- ssb ssc sse ssh ssl ssr sss ssu sub suc sue suh sul sur sus suu ubb ubc ube ubh ubl ubr ubs ubu ucb ucc uce uch ucl ucr ucs ucu ueb uec uee ueh uel uer ues uhb uhc uhe uhh uhl uhr uhs uhu ulb ulc ule ull ulr uls ulu ur- urb urc ure url urr urs uru usb usc use ush usl usr uss usu uuc uue uur uus uuu

bbbb bbbs bbch bbeb bbhs bblb bbls bbrc bcbc bcbs bccc bccl bccs bcec bcer bces bche bchs bcrs bcru bcsc bcsl bcss bcuc bebb bebe bech becs becu beeb beel beer bees behr behs bele bell bels belu berc bere berr bers beru bes- bese besh bess beur bhcc bhel bher bhhs bhur bhuu blcu bleb blee bleh bles bleu blhs blls blrc blss blub blue blur blus brcb brce breb brec bree brel brer bres brhs brls brrr brrs brsb brsr bruc brue bruh brus bscs bseb bsec bsee bser bses bshs bslc bssc bsse bubb bube bubs bubu bucc buce buch bucs bucu buel buer bueu buhe buhl buhr buhs bulb bule bull buls bulu bur- burb bure burh burl burr burs buru busc buse bush buss busu buus cbbc cbbs cbcc cbce cbcl cbcr cbcs cbcu cbec cbee cber cbhl cbhs cblb cblc cbre cbrh cbrl cbsc cbse cbus ccbc cccb cccc cccl cccs cccu ccee ccel cche cchl cchr cchs cclc ccls ccrc ccre ccrl ccrs ccsl ccss ccuc ccus cebs cebu cec- cece cecs ceeb ceec ceel cees cehl cehs cel- celc cele cell cels cer- cerc cere cerl cers cesc cese cesr cess chce chch chcs cheb chec chee cheh chel cher ches cheu chhs chlc chlr chrb chrc chrr chrs chsc chse chsh chsr chub chul chur chus clec clee cler cles cleu clhs clrs clsc club clue cluh crbc crbu crcc crce crcr cre- creb crec cree creh cres creu crhs crls crss crub crue crus cscb cscc csce csch cscl cscr cscs csec csee cseh cser cshl cshs cslr cslu csrc csrs csse cssr csur csus cub- cubb cube cubs cucc cuce cuer cues culb culc cule cull culs curb cure curl curr curs cusb cush cuss cusu e-cl ebbc ebbr ebbs ebcc ebel eber ebes ebhs ebru ebul ebur ebus ecbc ecbe eccb eccc ecce eccl eces eche echl echs ecrc ecrl ecrr ecru ecsc ecse ecss ecsu ecus eecs eeee eees eehs eele eels eerc eers eese ehcc eheh ehel eher eheu ehhs ehle ehre el-b elbe elbu elcb elce elch elec elee eleh eler eles elhs elle ells ellu else elsu elue elul elus erbb erbe ercc erce erch ereb erec erel erer eres erhc erhs erhu erle erll errc erre errs erse ersh erub eruc eruh erur erus esbs escb esce esch escr escs escu esee esel eser eses eshs eshu esse essh essl essu esus eubc euch euer euhl eule eur- eurc eure euse hbbs hbes hbhs hbrs hbss hcbc hcbs hccb hccc hcch hccs hchs hcsc hcss hebb hebe hebr hech hecs heeb heel heer hees hehe hehs hele hell hels helu herb herc here herl herr hers heru hesc hesh hess heue heur heus hhcl hhhh hhhs hhus hler hlhs hlss hlul hrbl hree hrhs hrrc hsbc hscc hses hshs hsls hsse hsur hubb hube hubl hubs huch hucs hucu huel huer hues