-er -ic b-p bbb bbc bbe bbi bbk bbm bbo bbp bbr bbt bcb bcc bce bci bck bcm bco bcp bcr bct be- beb bec bee bei bek bem beo bep ber bet bi- bib bic bie bii bik bim bio bip bir bit bkb bkc bke bkk bkm bko bkp bkr bkt bmb bmc bme bmi bmk bmm bmo bmp bmr bmt bob boc boe boi bok bom boo bop bor bot bpb bpc bpe bpi bpm bpo bpp bpr bpt brb bre bri brk brm bro brp brr brt btb btc bte bti btk btm bto btp btr btt c-- cbb cbc cbe cbi cbk cbm cbo cbp cbr cbt ccb ccc cce cci cck ccm cco ccp ccr cct ce- ceb cec cee cei cek cem ceo cep cer cet ci- cib cic cie cii cik cim cio cip cir cit ckb ckc cki ckm cko ckt cmb cmc cme cmi cmk cmm cmo cmp cmr cmt co- cob coc coe coi cok com coo cop cor cot cpb cpc cpe cpi cpk cpm cpo cpp cpr cpt crb crc cre cri crk crm cro crp crr crt ctb ctc cte cti ctk ctm cto ctp ctr ctt ebb ebc ebe ebi ebk ebm ebo ebp ebr ebt ec- ecb ecc ece eci eck ecm eco ecr ect eeb eec eee eek eem eeo eep eer eet eib eic eie eii eik eim eio eip eir eit ekb ekc eke eki eko ekp ekr ekt em- emb emc eme emi emk emm emo emp emr emt eo- eob eoc eoe eoi eok eom eoo eop eor eot ep- epb epc epe epi epm epo epp epr ept erb erc ere eri erk erm ero erp err ert etb etc ete eti etk etm eto etp etr ett ibb ibc ibe ibi ibk ibm ibo ibp ibr ibt icb icc ice ici ick icm ico icp icr ict ie- iec iee iei iek iem iep ier iet iib iic iie iii iim iio iip iir iit ikb ikc ike iki ikk iko ikr ikt im- imb imc ime imi imm imo imp imt io- iob ioc ioe ioi iom ioo iop ior iot ipb ipc ipe ipi ipm ipo ipp ipr ipt ir- irb irc ire iri irk irm iro irp irr irt itb itc ite iti itk itm ito itp itt k-t kbb kbc kbe kbi kbk kbm kbo kbp kbr kcb kcc kce kci kck kcm kcp kcr kct ke- keb kec kee kei kek kem keo kep ker ket kib kic kie kii kik kim kio kip kir kit kkb kkc kke kki kkk kkm kkp kkr kkt kmb kmc kme kmi kmk kmm kmo kmp kmt kob koc koe koi kok kom koo kop kor kot kpc kpe kpi kpk kpm kpo kpp kpr kpt krc kri krk kro krp krr krt ktb ktc kte ktk ktm kto ktp ktr ktt m-o m-r mbb mbc mbe mbi mbk mbm mbo mbp mbr mbt mc- mcb mcc mce mci mck mcm mco mcp mcr mct meb mec mee mei mek mem meo mep mer met mi- mib mic mie mii mik mim mio mip mir mit mkb mkc mke mkk mkm mko mkp mkr mkt mmb mmc mme mmi mmk mmm mmo mmp mmr mmt mob moc moe moi mok mom moo mop mor mot mpb mpc mpe mpi mpk mpm mpo mpp mpr mpt mrb mrc mre mri mrk mrm mro mrp mrr mrt mtb mtc mte mti mtk mtm mto mtp mtr mtt o-i ob- obb obc obe obi obk obm obo obp obr obt oc- ocb occ oci ock ocm oco ocp ocr oct oeb oec oee oei oem oeo oep oer oet oib oic oie oii oik oim oio oip oir oit okb okc oke oki okk oko okp okr om- omb omc ome omi omm omo omp omr omt oo- oob ooc ooi ook oom ooo oop oor oot op- opb opc ope opi opk opm opo opp opr opt or- orb orc ore ori ork orm oro orp orr ort ot- otb otc ote oti otk otm oto otp otr ott p-p pbb pbc pbe pbi pbk pbm pbo pbp pbr pbt pcb pcc pce pci pck pcm pco pcp pcr pct peb pec pee pei pek pem peo pep per pet pib pic pie pii pik pim pio pip pir pit pkb pkc pke pki pkm pko pkp pkr pkt pmb pmc pme pmi pmk pmm pmo pmp pmr pmt pob poc poe poi pok pom poo pop por pot ppb ppc ppe ppi ppk ppm ppo ppp ppr ppt prb prc pre pri prk prm pro prp prr prt pt- ptb ptc pte pti ptk ptm pto ptp ptr ptt rbb rbc rbe rbi rbk rbm rbo rbp rbr rbt rcb rcc rce rci rcm rco rcp rcr rct re- reb rec ree rei rek rem reo rep rer ret rib ric rie rii rik rim rio rip rir rit rkb rkc rke rkk rkm rko rkp rkt rmb rmc rme rmi rmm rmo rmp rmr rmt rob roc roe roi rok rom roo rop ror rot rpb rpc rpe rpi rpk rpm rpo rpp rpr rpt rrb rrc rri rrk rrm rrp rrr rrt rtb rtc rte rti rtk rtm rto rtp rtr rtt tbb tbc tbe tbi tbk tbm tbo tbp tbr tbt tcb tcc tce tci tck tcm tco tcp tcr tct te- teb tec tee tei tek tem teo tep ter tet tib tic tie tii tik tim tio tip tir tit tkb tkc tke tkk tkm tko tkp tkr tkt tmb tmc tme tmi tmk tmm tmo tmp tmr tmt to- tob toc toe toi tok tom too top tor tot tpb tpc tpe tpi tpk tpm tpo tpp tpr tpt trb trc tre tri trk trm tro trp trr trt ttb ttc tte tti ttk ttm tto ttp ttr ttt