-er bbb bbc bbe bbh bbk bbn bbr bbs bcb bcc bce bch bck bcn bcr bcs be- beb bec bee beh bek ben ber bes bhb bhc bhe bhh bhk bhr bhs bkb bkc bke bkk bkn bkr bks bnb bnc bne bnk bnn bnr bns brb bre brh brk brn brr brs bsb bsc bse bsh bsk bsn bsr bss c-- cbb cbc cbe cbh cbk cbn cbr cbs ccb ccc cce cch cck ccn ccr ccs ce- ceb cec cee ceh cek cen cer ces ch- chb chc che chh chk chn chr chs ckb ckc ckh cks cn- cnb cnc cne cnh cnn cnr cns crb crc cre crh crk crn crr crs csb csc cse csh csk csn csr css ebb ebc ebe ebh ebk ebn ebr ebs ec- ecb ecc ece ech eck ecn ecr ecs eeb eec eee eek een eer ees ehb ehc ehe ehh ehn ehr ehs ekb ekc eke ekh ekr eks en- enb enc ene enh enk enn enr ens erb erc ere erh erk ern err ers es- esb esc ese esh esk esn esr ess hbb hbc hbe hbh hbk hbn hbr hbs hcb hcc hce hch hck hcn hcr hcs he- heb hec hee heh hek hen her hes hhb hhc hhe hhh hhk hhn hhr hhs hkb hkh hkk hkn hkr hks hnb hnc hne hnh hnk hnn hns hr- hrb hrc hre hrh hrk hrn hrr hrs hsb hsc hse hsh hsk hsn hsr hss kbb kbc kbe kbh kbk kbn kbr kbs kcb kcc kce kch kck kcn kcr kcs ke- keb kec kee keh kek ken ker kes khe khh khk khn khr khs kkb kkc kke kkh kkk kkn kkr kks kn- knc kne knk knn knr krc krk krn krr krs ksb ksc kse ksh ksk ksn ksr kss nbb nbc nbe nbk nbn nbr nbs ncb ncc nce nch nck ncn ncr ncs ne- neb nec nee neh nek nen ner nes nhb nhc nhe nhh nhk nhn nhr nhs nkc nke nkk nkn nkr nks nnb nnc nne nnh nnk nnn nns nrb nrc nre nrk nrn nrr nrs nsb nsc nse nsh nsk nsn nsr nss rbb rbc rbe rbh rbk rbn rbr rbs rcb rcc rce rch rcn rcr rcs re- reb rec ree reh rek ren rer res rh- rhb rhc rhe rhh rhn rhr rhs rkb rkc rke rkk rks rnb rnc rnh rnn rnr rns rrb rrc rrh rrk rrn rrr rrs rsb rsc rse rsh rsk rsn rsr rss sbb sbc sbe sbh sbk sbn sbr sbs scb scc sce sch sck scn scr scs se- seb sec see seh sek sen ser ses sh- shb shc she shh shk shn shr shs sk- skb skc ske skh skk skr sks snb snc sne snk snn snr sns sr- srb src sre srh srk srn srr srs ss- ssb ssc sse ssh ssk ssn ssr sss

-ene bbbb bbbs bbch bbeb bbhs bbrc bcbc bcbs bccc bccs bcec bcer bces bche bchs bcrs bcsc bcsn bcss bebb bebe bech beck becs beeb beek been beer bees behn behr behs beke beks bene benk benn bens berc bere berk bern berr bers bes- bese besh besk bess bhcc bher bhhs bkhs bner bnhs bnrr bnss brcb brce breb brec bree brek bren brer bres brhs brkb brns brrr brrs brsb brsr bscs bseb bsec bsee bser bses bshs bsns bssc bsse cbbc cbbs cbcc cbce cbcn cbcr cbcs cbec cbee cber cbhs cbkn cbkr cbre cbrh cbrn cbsc cbse cbsn ccbc ccbn cccb cccc cccs ccee cche cchr cchs ccnb ccnc ccne ccnr ccns ccrc ccre ccrs ccsn ccss cebs cec- cece cecs ceeb ceec cees cehs ceke cen- cene cens cer- cerc cere cern cers cesc cese cesr cess chce chch chcs cheb chec chee cheh chek chen cher ches chhs chkb chks chnb chnc chnr chns chrb chrc chrn chrr chrs chsc chse chsh chsr ckbc ckbe ckch ckck ckcs cken cker ckhs cknb cknc ckns ckrc cksb cksh cnbc cnes cnhs cnrc cnrr cnss crbc crcc crce crcr cre- creb crec cree creh cren cres crhs crkc crne crns crss cscb cscc csce csch cscr cscs csec csee cseh cser cshs csks csne csrc csrs csse cssr ebbc ebbr ebbs ebcc eben eber ebes ebhs ecbc ecbe eccb eccc ecce eces eche echs ecks ecne ecrc ecrr ecsc ecse ecss eecs eeee eees eehs eeke eeks eens eerc eers eese eesk ehcc eheh ehen eher ehhs ehre ekch ekeb ekek eken eker ekes ekhs ekne enb- enbn enbr ence ench encs enee ener enes enhs enke enkr ennc enne enns enrs ense erbb erbe ercc erce erch ereb erec eren erer eres erhc erhs erke erks erne erns errc erre errs erse ersh esbs escb esce esch escr escs esee esek esen eser eses eshs eske esks esne esse essh hbbs hbes hbhs hbrs hbss hcbc hcbs hccb hccc hcch hccs hchs hcsc hcss hebb hebe hebr hech heck hecs heeb heek heer hees hehe hehn hehs heke hene henh henk henn hens herb herc here herk hern herr hers hesc hesh hess hhhh hhhs hkcc hkcs hkse hnce hncs hnhs hree hrhs hrrc hsbc hscc hscn hses hshs hsse kbbb kbbc kbbe kbbk kbbr kbbs kbcb kbce kbch kbck kbcr kbcs kbeb kbec kbee kbeh kbek kben kber kbes kbhb kbhc kbhe kbhh kbhn kbhr kbhs kbkb kbkk kbkr kbnh kbnn kbnr kbrb kbrc kbre kbrh kbrk kbrn kbsb kbsk kbsn kbsr kbss kcbc kcbk kcbr kcbs kccb kccc kcck kccr kceb kcec kcee kche kchh kchk kchn kchr kchs kckc kckk kckn kckr kcnb kcnh kcnr kcns kcrc kcrh kcrn kcrr kcrs kcsb kcsc kcse kcsn kcsr kcss kebb kebc kebe kebn kebr kech keck kecr keeh keek keen keer kees kehk kehr kehs kekb kekc keke keks ken- kene kenk kenn kenr kens ker- kerb kerc kere kerk kern kerr kers kesb kesc kesh kesk kesn kesr