-er -th b-u bbb bbc bbe bbh bbk bbl bbn bbr bbs bbt bbu bcb bcc bce bch bck bcl bcn bcr bcs bct bcu be- beb bec bee beh bek bel ben ber bes bet beu bhb bhc bhe bhh bhk bhl bhr bhs bht bhu bkb bkc bke bkk bkl bkn bkr bks bkt blb blc ble blh blk bll bln blr bls blt blu bnb bnc bne bnk bnl bnn bnr bns bnt bnu brb bre brh brk brl brn brr brs brt bru bsb bsc bse bsh bsk bsl bsn bsr bss bst bsu btb btc bte bth btk btl btn btr bts btt btu bub buc bue buh buk bul bun bur bus but buu c-- cbb cbc cbe cbh cbk cbl cbn cbr cbs cbt cbu ccb ccc cce cch cck ccl ccn ccr ccs cct ccu ce- ceb cec cee ceh cek cel cen cer ces cet ceu ch- chb chc che chh chk chl chn chr chs cht chu ckb ckc ckh cks ckt cl- clb clc cle clh clk cll cln clr cls clt clu cn- cnb cnc cne cnh cnl cnn cnr cns cnt cnu crb crc cre crh crk crl crn crr crs crt cru csb csc cse csh csk csl csn csr css cst csu ctb ctc cte cth ctk ctl ctn ctr cts ctt ctu cub cuc cue cuh cuk cul cun cur cus cut cuu ebb ebc ebe ebh ebk ebl ebn ebr ebs ebt ebu ec- ecb ecc ece ech eck ecl ecn ecr ecs ect ecu eeb eec eee eek eel een eer ees eet ehb ehc ehe ehh ehl ehn ehr ehs eht ehu ekb ekc eke ekh ekl ekr eks ekt eku elb elc ele elh elk ell eln elr els elt elu en- enb enc ene enh enk enl enn enr ens ent enu erb erc ere erh erk erl ern err ers ert eru es- esb esc ese esh esk esl esn esr ess est esu etb etc ete eth etk etl etn etr ets ett etu eu- eub euc eue eul eun eur eus eut hbb hbc hbe hbh hbk hbl hbn hbr hbs hbt hbu hcb hcc hce hch hck hcl hcn hcr hcs hct he- heb hec hee heh hek hel hen her hes het heu hhb hhc hhe hhh hhk hhl hhn hhr hhs hht hhu hkb hkh hkk hkl hkn hkr hks hkt hku hlb hlc hle hlh hll hln hlr hls hlt hlu hnb hnc hne hnh hnk hnl hnn hns hnt hnu hr- hrb hrc hre hrh hrk hrl hrn hrr hrs hrt hru hsb hsc hse hsh hsk hsl hsn hsr hss hst hsu htb htc hte hth htk htl htn htr hts htt hub huc hue huh huk hul hun hur hus hut huu k-t kbb kbc kbe kbh kbk kbl kbn kbr kbs kbu kcb kcc kce kch kck kcl kcn kcr kcs kct kcu ke- keb kec kee keh kek kel ken ker kes ket khe khh khk khn khr khs khu kkb kkc kke kkh kkk kkl kkn kkr kks kkt kku kl- klb klc klh klr kls klt klu kn- knc kne knk knl knn knr knt knu krc krk krl krn krr krs krt kru ksb ksc kse ksh ksk ksl ksn ksr kss kst ksu ktb ktc kte kth ktk ktl ktn ktr kts ktt ktu kub kuc kue kuh kuk kul kun kur kus kut kuu lbb lbc lbe lbh lbk lbl lbr lbs lbt lbu lcb lcc lce lch lck lcl lcn lcr lcs lct lcu leb lec lee leh lek lel len ler les let leu lhb lhc lhh lhk lhr lhs lht lhu lkb lkh lkl lkr lks lkt llb llc lle llk lll lln llr lls llt llu lnb lnc lne lnh lnk lnl lnn lnr lns lnt lnu lrb lrc lrh lrk lrn lrr lrs lrt lru lsb lsc lse lsh lsk lsl lsn lsr lss lst lsu ltb ltc lte lth ltk ltl ltr lts ltt ltu lub luc lue luh luk lul lun lur lus lut luu nbb nbc nbe nbk nbl nbn nbr nbs nbt nbu ncb ncc nce nch nck ncl ncn ncr ncs nct ncu ne- neb nec nee neh nek nel nen ner nes net neu nhb nhc nhe nhh nhk nhl nhn nhr nhs nht nhu nkc nke nkk nkn nkr nks nkt nku nlb nlc nle nlh nlk nll nln nlr nls nlt nlu nnb nnc nne nnh nnk nnl nnn nns nnt nnu nrb nrc nre nrk nrl nrn nrr nrs nrt nru nsb nsc nse nsh nsk nsl nsn nsr nss nst nsu ntb ntc nte nth ntk ntn ntr nts ntt ntu nub nuc nue nuh nuk nul nun nur nus nut nuu rbb rbc rbe rbh rbk rbl rbn rbr rbs rbt rbu rcb rcc rce rch rcl rcn rcr rcs rct rcu re- reb rec ree reh rek rel ren rer res ret reu rh- rhb rhc rhe rhh rhl rhn rhr rhs rht rhu rkb rkc rke rkk rks rkt rku rlc rle rlh rll rln rlr rls rlt rlu rnb rnc rnh rnn rnr rns rnt rnu rrb rrc rrh rrk rrl rrn rrr rrs rrt rru rsb rsc rse rsh rsk rsl rsn rsr rss rst rsu rtb rtc rte rtk rtl rtn rtr rts rtt rtu rub ruc rue ruh ruk run rur rus rut ruu sbb sbc sbe sbh sbk sbl sbn sbr sbs sbt sbu scb scc sce sch sck scl scn scr scs sct scu se- seb sec see seh sek sel sen ser ses set seu sh- shb shc she shh shk shl shn shr shs sht shu sk- skb skc ske skh skk skl skr sks skt sku slb slc sle slh slk sll sln slr sls slt slu snb snc sne snk snl snn snr sns snt snu sr- srb src sre srh srk srl srn