-er -ic b-u bbb bbc bbe bbi bbm bbo bbr bbs bbt bbu bcb bcc bce bci bcm bco bcr bcs bct bcu be- beb bec bee bei bem beo ber bes bet beu bi- bib bic bie bii bim bio bir bis bit biu bmb bmc bme bmi bmm bmo bmr bms bmt bmu bob boc boe boi bom boo bor bos bot bou brb bre bri brm bro brr brs brt bru bsb bsc bse bsi bsm bso bsr bss bst bsu btb btc bte bti btm bto btr bts btt btu bub buc bue bui bum buo bur bus but buu c-- cbb cbc cbe cbi cbm cbo cbr cbs cbt cbu ccb ccc cce cci ccm cco ccr ccs cct ccu ce- ceb cec cee cei cem ceo cer ces cet ceu ci- cib cic cie cii cim cio cir cis cit ciu cmb cmc cme cmi cmm cmo cmr cms cmt cmu co- cob coc coe coi com coo cor cos cot cou crb crc cre cri crm cro crr crs crt cru csb csc cse csi csm cso csr css cst csu ctb ctc cte cti ctm cto ctr cts ctt ctu cub cuc cue cui cum cuo cur cus cut cuu ebb ebc ebe ebi ebm ebo ebr ebs ebt ebu ec- ecb ecc ece eci ecm eco ecr ecs ect ecu eeb eec eee eem eeo eer ees eet eib eic eie eii eim eio eir eis eit eiu em- emb emc eme emi emm emo emr ems emt emu eo- eob eoc eoe eoi eom eoo eor eos eot eou erb erc ere eri erm ero err ers ert eru es- esb esc ese esi esm eso esr ess est esu etb etc ete eti etm eto etr ets ett etu eu- eub euc eue eui eur eus eut ibb ibc ibe ibi ibm ibo ibr ibs ibt ibu icb icc ice ici icm ico icr ics ict icu ie- iec iee iei iem ier ies iet iib iic iie iii iim iio iir iis iit iiu im- imb imc ime imi imm imo ims imt imu io- iob ioc ioe ioi iom ioo ior ios iot iou ir- irb irc ire iri irm iro irr irs irt iru is- isb isc ise isi ism iso isr iss ist isu itb itc ite iti itm ito its itt itu iu- iub iuc iue iui ium iur ius iut m-o m-r mbb mbc mbe mbi mbm mbo mbr mbs mbt mbu mc- mcb mcc mce mci mcm mco mcr mcs mct mcu meb mec mee mei mem meo mer mes met meu mi- mib mic mie mii mim mio mir mis mit miu mmb mmc mme mmi mmm mmo mmr mms mmt mmu mob moc moe moi mom moo mor mos mot mou mrb mrc mre mri mrm mro mrr mrs mrt mru msb msc mse msi msm mso msr mss mst msu mtb mtc mte mti mtm mto mtr mts mtt mtu mub muc mue mui mum mur mus mut muu o-i ob- obb obc obe obi obm obo obr obs obt obu oc- ocb occ oci ocm oco ocr ocs oct ocu oeb oec oee oei oem oeo oer oes oet oib oic oie oii oim oio oir ois oit oiu om- omb omc ome omi omm omo omr oms omt omu oo- oob ooc ooi oom ooo oor oos oot or- orb orc ore ori orm oro orr ors ort oru os- osb osc ose osi osm oso osr oss ost osu ot- otb otc ote oti otm oto otr ots ott otu ou- ouc oue oui oum ouo our ous out rbb rbc rbe rbi rbm rbo rbr rbs rbt rbu rcb rcc rce rci rcm rco rcr rcs rct rcu re- reb rec ree rei rem reo rer res ret reu rib ric rie rii rim rio rir ris rit rmb rmc rme rmi rmm rmo rmr rms rmt rob roc roe roi rom roo ror ros rot rou rrb rrc rri rrm rrr rrs rrt rru rsb rsc rse rsi rsm rso rsr rss rst rsu rtb rtc rte rti rtm rto rtr rts rtt rtu rub ruc rue rui rum ruo rur rus rut ruu sbb sbc sbe sbi sbm sbo sbr sbs sbt sbu scb scc sce sci scm sco scr scs sct scu se- seb sec see sei sem seo ser ses set seu sib sic sie sii sim sio sir sis sit siu smb smc sme smi smm smo smr sms smt smu sob soc soe soi som soo sor sos sot sou sr- srb src sre sri srm sro srr srs srt ss- ssb ssc sse ssi ssm sso ssr sss sst ssu stb stc ste sti stm sto str sts stt stu sub suc sue sui sum suo sur sus sut suu tbb tbc tbe tbi tbm tbo tbr tbs tbt tbu tcb tcc tce tci tcm tco tcr tcs tct tcu te- teb tec tee tei tem teo ter tes tet teu tib tic tie tii tim tio tir tis tit tiu tmb tmc tme tmi tmm tmo tmr tms tmt tmu to- tob toc toe toi tom too tor tos tot tou trb trc tre tri trm tro trr trs trt tru tsb tsc tse tsi tsm tso tsr tss tst tsu ttb ttc tte tti ttm tto ttr tts ttt ttu tub tuc tue tui tum tuo tur tus tut tuu ubb ubc ube ubi ubo ubr ubs ubt ubu ucb ucc uce uci ucm uco ucr ucs uct ucu ueb uec uee uei uem uer ues uet uib uic uie uii uim uio uir uis uit uiu um- umb umc ume umi umm umo umr ums umt umu uob uoc uoe uom uoo uor uos uot ur- urb urc ure uri urm uro urr urs urt uru usb usc use usi usm uso usr uss ust usu utb utc ute uti utm uto utr uts utt