-er -up b-p b-u bbb bbc bbe bbm bbo bbp bbr bbt bbu bcb bcc bce bcm bco bcp bcr bct bcu be- beb bec bee bem beo bep ber bet beu bmb bmc bme bmm bmo bmp bmr bmt bmu bob boc boe bom boo bop bor bot bou bpb bpc bpe bpm bpo bpp bpr bpt bpu brb bre brm bro brp brr brt bru btb btc bte btm bto btp btr btt btu bub buc bue bum buo bup bur but buu c-- cbb cbc cbe cbm cbo cbp cbr cbt cbu ccb ccc cce ccm cco ccp ccr cct ccu ce- ceb cec cee cem ceo cep cer cet ceu cmb cmc cme cmm cmo cmp cmr cmt cmu co- cob coc coe com coo cop cor cot cou cpb cpc cpe cpm cpo cpp cpr cpt cpu crb crc cre crm cro crp crr crt cru ctb ctc cte ctm cto ctp ctr ctt ctu cub cuc cue cum cuo cup cur cut cuu ebb ebc ebe ebm ebo ebp ebr ebt ebu ec- ecb ecc ece ecm eco ecr ect ecu eeb eec eee eem eeo eep eer eet em- emb emc eme emm emo emp emr emt emu eo- eob eoc eoe eom eoo eop eor eot eou ep- epb epc epe epm epo epp epr ept epu erb erc ere erm ero erp err ert eru etb etc ete etm eto etp etr ett etu eu- eub euc eue eup eur eut m-o m-r mbb mbc mbe mbm mbo mbp mbr mbt mbu mc- mcb mcc mce mcm mco mcp mcr mct mcu meb mec mee mem meo mep mer met meu mmb mmc mme mmm mmo mmp mmr mmt mmu mob moc moe mom moo mop mor mot mou mpb mpc mpe mpm mpo mpp mpr mpt mpu mrb mrc mre mrm mro mrp mrr mrt mru mtb mtc mte mtm mto mtp mtr mtt mtu mub muc mue mum mup mur mut muu ob- obb obc obe obm obo obp obr obt obu oc- ocb occ ocm oco ocp ocr oct ocu oeb oec oee oem oeo oep oer oet om- omb omc ome omm omo omp omr omt omu oo- oob ooc oom ooo oop oor oot op- opb opc ope opm opo opp opr opt or- orb orc ore orm oro orp orr ort oru ot- otb otc ote otm oto otp otr ott otu ou- ouc oue oum ouo oup our out p-p pbb pbc pbe pbm pbo pbp pbr pbt pbu pcb pcc pce pcm pco pcp pcr pct pcu peb pec pee pem peo pep per pet peu pmb pmc pme pmm pmo pmp pmr pmt pmu pob poc poe pom poo pop por pot pou ppb ppc ppe ppm ppo ppp ppr ppt ppu prb prc pre prm pro prp prr prt pru pt- ptb ptc pte ptm pto ptp ptr ptt ptu pub puc pue pum pup pur put puu rbb rbc rbe rbm rbo rbp rbr rbt rbu rcb rcc rce rcm rco rcp rcr rct rcu re- reb rec ree rem reo rep rer ret reu rmb rmc rme rmm rmo rmp rmr rmt rob roc roe rom roo rop ror rot rou rpb rpc rpe rpm rpo rpp rpr rpt rpu rrb rrc rrm rrp rrr rrt rru rtb rtc rte rtm rto rtp rtr rtt rtu rub ruc rue rum ruo rup rur rut ruu tbb tbc tbe tbm tbo tbp tbr tbt tbu tcb tcc tce tcm tco tcp tcr tct tcu te- teb tec tee tem teo tep ter tet teu tmb tmc tme tmm tmo tmp tmr tmt tmu to- tob toc toe tom too top tor tot tou tpb tpc tpe tpm tpo tpp tpr tpt tpu trb trc tre trm tro trp trr trt tru ttb ttc tte ttm tto ttp ttr ttt ttu tub tuc tue tum tuo tup tur tut tuu ubb ubc ube ubo ubp ubr ubt ubu ucb ucc uce ucm uco ucp ucr uct ucu ueb uec uee uem uep uer uet um- umb umc ume umm umo ump umr umt umu uob uoc uoe uom uoo uop uor uot up- upb upc upe upm upo upp upr upt upu ur- urb urc ure urm uro urp urr urt uru utb utc ute utm uto utp utr utt utu uuc uue uum uur uut uuu