-er -ic b-u bbb bbc bbe bbi bbm bbo bbr bbs bbu bcb bcc bce bci bcm bco bcr bcs bcu be- beb bec bee bei bem beo ber bes beu bi- bib bic bie bii bim bio bir bis biu bmb bmc bme bmi bmm bmo bmr bms bmu bob boc boe boi bom boo bor bos bou brb bre bri brm bro brr brs bru bsb bsc bse bsi bsm bso bsr bss bsu bub buc bue bui bum buo bur bus buu c-- cbb cbc cbe cbi cbm cbo cbr cbs cbu ccb ccc cce cci ccm cco ccr ccs ccu ce- ceb cec cee cei cem ceo cer ces ceu ci- cib cic cie cii cim cio cir cis ciu cmb cmc cme cmi cmm cmo cmr cms cmu co- cob coc coe coi com coo cor cos cou crb crc cre cri crm cro crr crs cru csb csc cse csi csm cso csr css csu cub cuc cue cui cum cuo cur cus cuu ebb ebc ebe ebi ebm ebo ebr ebs ebu ec- ecb ecc ece eci ecm eco ecr ecs ecu eeb eec eee eem eeo eer ees eib eic eie eii eim eio eir eis eiu em- emb emc eme emi emm emo emr ems emu eo- eob eoc eoe eoi eom eoo eor eos eou erb erc ere eri erm ero err ers eru es- esb esc ese esi esm eso esr ess esu eu- eub euc eue eui eur eus ibb ibc ibe ibi ibm ibo ibr ibs ibu icb icc ice ici icm ico icr ics icu ie- iec iee iei iem ier ies iib iic iie iii iim iio iir iis iiu im- imb imc ime imi imm imo ims imu io- iob ioc ioe ioi iom ioo ior ios iou ir- irb irc ire iri irm iro irr irs iru is- isb isc ise isi ism iso isr iss isu iu- iub iuc iue iui ium iur ius m-o m-r mbb mbc mbe mbi mbm mbo mbr mbs mbu mc- mcb mcc mce mci mcm mco mcr mcs mcu meb mec mee mei mem meo mer mes meu mi- mib mic mie mii mim mio mir mis miu mmb mmc mme mmi mmm mmo mmr mms mmu mob moc moe moi mom moo mor mos mou mrb mrc mre mri mrm mro mrr mrs mru msb msc mse msi msm mso msr mss msu mub muc mue mui mum mur mus muu o-i ob- obb obc obe obi obm obo obr obs obu oc- ocb occ oci ocm oco ocr ocs ocu oeb oec oee oei oem oeo oer oes oib oic oie oii oim oio oir ois oiu om- omb omc ome omi omm omo omr oms omu oo- oob ooc ooi oom ooo oor oos or- orb orc ore ori orm oro orr ors oru os- osb osc ose osi osm oso osr oss osu ou- ouc oue oui oum ouo our ous rbb rbc rbe rbi rbm rbo rbr rbs rbu rcb rcc rce rci rcm rco rcr rcs rcu re- reb rec ree rei rem reo rer res reu rib ric rie rii rim rio rir ris rmb rmc rme rmi rmm rmo rmr rms rob roc roe roi rom roo ror ros rou rrb rrc rri rrm rrr rrs rru rsb rsc rse rsi rsm rso rsr rss rsu rub ruc rue rui rum ruo rur rus ruu sbb sbc sbe sbi sbm sbo sbr sbs sbu scb scc sce sci scm sco scr scs scu se- seb sec see sei sem seo ser ses seu sib sic sie sii sim sio sir sis siu smb smc sme smi smm smo smr sms smu sob soc soe soi som soo sor sos sou sr- srb src sre sri srm sro srr srs ss- ssb ssc sse ssi ssm sso ssr sss ssu sub suc sue sui sum suo sur sus suu ubb ubc ube ubi ubo ubr ubs ubu ucb ucc uce uci ucm uco ucr ucs ucu ueb uec uee uei uem uer ues uib uic uie uii uim uio uir uis uiu um- umb umc ume umi umm umo umr ums umu uob uoc uoe uom uoo uor uos ur- urb urc ure uri urm uro urr urs uru usb usc use usi usm uso usr uss usu uuc uue uum uur uus uuu