-er -ic b-u bbb bbc bbd bbe bbi bbm bbr bbs bbu bcb bcc bcd bce bci bcm bcr bcs bcu bdb bdc bdd bde bdi bdm bdr bds bdu be- beb bec bed bee bei bem ber bes beu bi- bib bic bid bie bii bim bir bis biu bmb bmc bmd bme bmi bmm bmr bms bmu brb brd bre bri brm brr brs bru bsb bsc bsd bse bsi bsm bsr bss bsu bub buc bud bue bui bum bur bus buu c-- cbb cbc cbd cbe cbi cbm cbr cbs cbu ccb ccc ccd cce cci ccm ccr ccs ccu cdb cdc cdd cde cdi cdm cdr cds cdu ce- ceb cec ced cee cei cem cer ces ceu ci- cib cic cid cie cii cim cir cis ciu cmb cmc cmd cme cmi cmm cmr cms cmu crb crc crd cre cri crm crr crs cru csb csc csd cse csi csm csr css csu cub cuc cud cue cui cum cur cus cuu dbb dbc dbd dbe dbi dbm dbr dbs dbu dcb dcc dcd dce dci dcm dcr dcs dcu ddb ddc ddd dde ddi ddm ddr dds ddu de- deb dec ded dee dei dem der des deu di- dib dic did die dii dim dir dis diu dmb dmc dmd dme dmi dmm dmr dms dmu drb drc drd dre dri drm drr drs dru dsb dsc dsd dse dsi dsm dsr dss dsu dub duc dud due dui dum dur dus ebb ebc ebd ebe ebi ebm ebr ebs ebu ec- ecb ecc ecd ece eci ecm ecr ecs ecu ed- edb edc edd ede edi edm edr eds edu eeb eec eed eee eem eer ees eib eic eid eie eii eim eir eis eiu em- emb emc emd eme emi emm emr ems emu erb erc erd ere eri erm err ers eru es- esb esc esd ese esi esm esr ess esu eu- eub euc eud eue eui eur eus i-d ibb ibc ibd ibe ibi ibm ibr ibs ibu icb icc icd ice ici icm icr ics icu idb idc idd ide idi idm idr ids idu ie- iec ied iee iei iem ier ies iib iic iid iie iii iim iir iis iiu im- imb imc imd ime imi imm ims imu ir- irb irc ird ire iri irm irr irs iru is- isb isc isd ise isi ism isr iss isu iu- iub iuc iud iue iui ium iur ius m-r mbb mbc mbd mbe mbi mbm mbr mbs mbu mc- mcb mcc mcd mce mci mcm mcr mcs mcu mdb mdc mdd mde mdi mdm mdr mds mdu meb mec med mee mei mem mer mes meu mi- mib mic mid mie mii mim mir mis miu mmb mmc mmd mme mmi mmm mmr mms mmu mrb mrc mrd mre mri mrm mrr mrs mru msb msc msd mse msi msm msr mss msu mub muc mud mue mui mum mur mus muu rbb rbc rbd rbe rbi rbm rbr rbs rbu rcb rcc rcd rce rci rcm rcr rcs rcu rdb rdc rdd rde rdi rdm rdr rds rdu re- reb rec red ree rei rem rer res reu rib ric rid rie rii rim rir ris rmb rmc rmd rme rmi rmm rmr rms rrb rrc rrd rri rrm rrr rrs rru rsb rsc rsd rse rsi rsm rsr rss rsu rub ruc rud rue rui rum rur rus ruu sbb sbc sbd sbe sbi sbm sbr sbs sbu scb scc scd sce sci scm scr scs scu sdb sdc sdd sde sdi sdm sdr sds sdu se- seb sec sed see sei sem ser ses seu sib sic sid sie sii sim sir sis siu smb smc smd sme smi smm smr sms smu sr- srb src srd sre sri srm srr srs ss- ssb ssc ssd sse ssi ssm ssr sss ssu sub suc sud sue sui sum sur sus suu ubb ubc ube ubi ubr ubs ubu ucb ucc ucd uce uci ucm ucr ucs ucu udb udc udd ude udi udm udr uds udu ueb uec ued uee uei uem uer ues uib uic uid uie uii uim uir uis uiu um- umb umc umd ume umi umm umr ums umu ur- urb urc urd ure uri urm urr urs uru usb usc usd use usi usm usr uss usu uuc uue uum uur uus uuu