-er -ol -up b-p b-u bbb bbc bbe bbk bbl bbm bbn bbo bbp bbr bbs bbu bcb bcc bce bck bcl bcm bcn bco bcp bcr bcs bcu be- beb bec bee bek bel bem ben beo bep ber bes beu bkb bkc bke bkk bkl bkm bkn bko bkp bkr bks blb blc ble blk bll blm bln blo blp blr bls blu bmb bmc bme bmk bml bmm bmn bmo bmp bmr bms bmu bnb bnc bne bnk bnl bnn bno bnp bnr bns bnu bob boc boe bok bol bom bon boo bop bor bos bou bpb bpc bpe bpl bpm bpn bpo bpp bpr bps bpu brb bre brk brl brm brn bro brp brr brs bru bsb bsc bse bsk bsl bsm bsn bso bsp bsr bss bsu bub buc bue buk bul bum bun buo bup bur bus buu c-- cbb cbc cbe cbk cbl cbm cbn cbo cbp cbr cbs cbu ccb ccc cce cck ccl ccm ccn cco ccp ccr ccs ccu ce- ceb cec cee cek cel cem cen ceo cep cer ces ceu ckb ckc ckm cko cks cl- clb clc cle clk cll clm cln clo clp clr cls clu cmb cmc cme cmk cml cmm cmn cmo cmp cmr cms cmu cn- cnb cnc cne cnl cnm cnn cno cnp cnr cns cnu co- cob coc coe cok col com con coo cop cor cos cou cpb cpc cpe cpk cpl cpm cpn cpo cpp cpr cps cpu crb crc cre crk crl crm crn cro crp crr crs cru csb csc cse csk csl csm csn cso csp csr css csu cub cuc cue cuk cul cum cun cuo cup cur cus cuu ebb ebc ebe ebk ebl ebm ebn ebo ebp ebr ebs ebu ec- ecb ecc ece eck ecl ecm ecn eco ecr ecs ecu eeb eec eee eek eel eem een eeo eep eer ees ekb ekc eke ekl eko ekp ekr eks eku elb elc ele elk ell elm eln elo elp elr els elu em- emb emc eme emk eml emm emn emo emp emr ems emu en- enb enc ene enk enl enm enn eno enp enr ens enu eo- eob eoc eoe eok eol eom eon eoo eop eor eos eou ep- epb epc epe epl epm epn epo epp epr eps epu erb erc ere erk erl erm ern ero erp err ers eru es- esb esc ese esk esl esm esn eso esp esr ess esu eu- eub euc eue eul eun eup eur eus kbb kbc kbe kbk kbl kbm kbn kbo kbp kbr kbs kbu kcb kcc kce kck kcl kcm kcn kcp kcr kcs kcu ke- keb kec kee kek kel kem ken keo kep ker kes kkb kkc kke kkk kkl kkm kkn kkp kkr kks kku kl- klb klc klm klo klr kls klu kmb kmc kme kmk kml kmm kmo kmp kms kmu kn- knc kne knk knl knm knn kno knp knr knu kob koc koe kok kol kom kon koo kop kor kos kou kpc kpe kpk kpl kpm kpn kpo kpp kpr kps kpu krc krk krl krn kro krp krr krs kru ksb ksc kse ksk ksl ksm ksn kso ksp ksr kss ksu kub kuc kue kuk kul kum kun kup kur kus kuu l-p lbb lbc lbe lbk lbl lbm lbo lbp lbr lbs lbu lcb lcc lce lck lcl lcm lcn lco lcp lcr lcs lcu leb lec lee lek lel lem len leo lep ler les leu lkb lkl lkp lkr lks llb llc lle llk lll llm lln llo llp llr lls llu lmb lmc lme lmk lml lmm lmn lmo lmp lmr lms lmu lnb lnc lne lnk lnl lnm lnn lno lnp lnr lns lnu lob loc loe lok lol lom lon loo lop lor los lou lpb lpc lpe lpk lpl lpm lpn lpo lpp lpr lps lpu lrb lrc lrk lrm lrn lro lrp lrr lrs lru lsb lsc lse lsk lsl lsm lsn lso lsp lsr lss lsu lub luc lue luk lul lum lun luo lup lur lus luu m-o m-r mbb mbc mbe mbk mbl mbm mbo mbp mbr mbs mbu mc- mcb mcc mce mck mcl mcm mcn mco mcp mcr mcs mcu meb mec mee mek mel mem men meo mep mer mes meu mkb mkc mke mkk mkl mkm mkn mko mkp mkr mks mku mlb mlc mle mlk mll mlm mln mlo mlp mlr mls mlu mmb mmc mme mmk mml mmm mmn mmo mmp mmr mms mmu mnb mnc mne mnk mnl mnm mnn mno mnp mnr mns mnu mob moc moe mok mol mom mon moo mop mor mos mou mpb mpc mpe mpk mpl mpm mpn mpo mpp mpr mps mpu mrb mrc mre mrk mrl mrm mrn mro mrp mrr mrs mru msb msc mse msk msl msm msn mso msp msr mss msu mub muc mue muk mul mum mun mup mur mus muu nbb nbc nbe nbk nbl nbm nbn nbo nbp nbr nbs nbu ncb ncc nce nck ncl ncm ncn nco ncp ncr ncs ncu ne- neb nec nee nek nel nem nen neo nep ner nes neu nkc nke nkk nkm nkn nko nkp nkr nks nku nlb nlc nle nlk nll nlm nln nlo nlp nlr nls nlu nmb nmc nme nmk nml nmm nmn nmo nmp nmr nms nmu nnb nnc nne nnk nnl nnm nnn nno nnp nns nnu no- nob noc noe nok nol nom non noo nop nor nos nou npb npc npe npl npm npn npo npp npr nps npu nrb nrc nre nrk nrl nrm nrn nro nrp nrr nrs nru nsb nsc nse nsk nsl nsm nsn nso nsp nsr nss nsu nub nuc nue nuk nul num nun nuo nup nur nus nuu ob- obb obc obe obk obl obm obn obo obp obr obs obu oc- ocb occ ock ocl ocm ocn