-er -ic -up b-p b-u bbb bbc bbe bbi bbm bbo bbp bbr bbs bbu bcb bcc bce bci bcm bco bcp bcr bcs bcu be- beb bec bee bei bem beo bep ber bes beu bi- bib bic bie bii bim bio bip bir bis biu bmb bmc bme bmi bmm bmo bmp bmr bms bmu bob boc boe boi bom boo bop bor bos bou bpb bpc bpe bpi bpm bpo bpp bpr bps bpu brb bre bri brm bro brp brr brs bru bsb bsc bse bsi bsm bso bsp bsr bss bsu bub buc bue bui bum buo bup bur bus buu c-- cbb cbc cbe cbi cbm cbo cbp cbr cbs cbu ccb ccc cce cci ccm cco ccp ccr ccs ccu ce- ceb cec cee cei cem ceo cep cer ces ceu ci- cib cic cie cii cim cio cip cir cis ciu cmb cmc cme cmi cmm cmo cmp cmr cms cmu co- cob coc coe coi com coo cop cor cos cou cpb cpc cpe cpi cpm cpo cpp cpr cps cpu crb crc cre cri crm cro crp crr crs cru csb csc cse csi csm cso csp csr css csu cub cuc cue cui cum cuo cup cur cus cuu ebb ebc ebe ebi ebm ebo ebp ebr ebs ebu ec- ecb ecc ece eci ecm eco ecr ecs ecu eeb eec eee eem eeo eep eer ees eib eic eie eii eim eio eip eir eis eiu em- emb emc eme emi emm emo emp emr ems emu eo- eob eoc eoe eoi eom eoo eop eor eos eou ep- epb epc epe epi epm epo epp epr eps epu erb erc ere eri erm ero erp err ers eru es- esb esc ese esi esm eso esp esr ess esu eu- eub euc eue eui eup eur eus ibb ibc ibe ibi ibm ibo ibp ibr ibs ibu icb icc ice ici icm ico icp icr ics icu ie- iec iee iei iem iep ier ies iib iic iie iii iim iio iip iir iis iiu im- imb imc ime imi imm imo imp ims imu io- iob ioc ioe ioi iom ioo iop ior ios iou ipb ipc ipe ipi ipm ipo ipp ipr ips ipu ir- irb irc ire iri irm iro irp irr irs iru is- isb isc ise isi ism iso isp isr iss isu iu- iub iuc iue iui ium iup iur ius m-o m-r mbb mbc mbe mbi mbm mbo mbp mbr mbs mbu mc- mcb mcc mce mci mcm mco mcp mcr mcs mcu meb mec mee mei mem meo mep mer mes meu mi- mib mic mie mii mim mio mip mir mis miu mmb mmc mme mmi mmm mmo mmp mmr mms mmu mob moc moe moi mom moo mop mor mos mou mpb mpc mpe mpi mpm mpo mpp mpr mps mpu mrb mrc mre mri mrm mro mrp mrr mrs mru msb msc mse msi msm mso msp msr mss msu mub muc mue mui mum mup mur mus muu o-i ob- obb obc obe obi obm obo obp obr obs obu oc- ocb occ oci ocm oco ocp ocr ocs ocu oeb oec oee oei oem oeo oep oer oes oib oic oie oii oim oio oip oir ois oiu om- omb omc ome omi omm omo omp omr oms omu oo- oob ooc ooi oom ooo oop oor oos op- opb opc ope opi opm opo opp opr ops or- orb orc ore ori orm oro orp orr ors oru os- osb osc ose osi osm oso osp osr oss osu ou- ouc oue oui oum ouo oup our ous p-p pbb pbc pbe pbi pbm pbo pbp pbr pbs pbu pcb pcc pce pci pcm pco pcp pcr pcs pcu peb pec pee pei pem peo pep per pes peu pib pic pie pii pim pio pip pir pis piu pmb pmc pme pmi pmm pmo pmp pmr pms pmu pob poc poe poi pom poo pop por pos pou ppb ppc ppe ppi ppm ppo ppp ppr pps ppu prb prc pre pri prm pro prp prr prs pru ps- psb psc pse psi psm pso psp psr pss psu pub puc pue pui pum pup pur pus puu rbb rbc rbe rbi rbm rbo rbp rbr rbs rbu rcb rcc rce rci rcm rco rcp rcr rcs rcu re- reb rec ree rei rem reo rep rer res reu rib ric rie rii rim rio rip rir ris rmb rmc rme rmi rmm rmo rmp rmr rms rob roc roe roi rom roo rop ror ros rou rpb rpc rpe rpi rpm rpo rpp rpr rps rpu rrb rrc rri rrm rrp rrr rrs rru rsb rsc rse rsi rsm rso rsp rsr rss rsu rub ruc rue rui rum ruo rup rur rus ruu sbb sbc sbe sbi sbm sbo sbp sbr sbs sbu scb scc sce sci scm sco scp scr scs scu se- seb sec see sei sem seo sep ser ses seu sib sic sie sii sim sio sip sir sis siu smb smc sme smi smm smo smp smr sms smu sob soc soe soi som soo sop sor sos sou spb spc spe spi spm spo spp spr sps spu sr- srb src sre sri srm sro srp srr srs ss- ssb ssc sse ssi ssm sso ssp ssr sss ssu sub suc sue sui sum suo sup sur sus suu ubb ubc ube ubi ubo ubp ubr ubs ubu ucb ucc uce uci ucm uco ucp ucr ucs ucu ueb uec uee uei uem uep uer ues uib uic uie uii uim uio uip uir uis uiu um- umb umc ume umi umm umo ump umr ums umu uob uoc uoe uom uoo uop uor uos up- upb upc upe upi upm upo upp upr ups upu ur- urb urc ure uri urm uro urp urr urs uru usb usc use usi usm uso usp