-er -ic b-u bbb bbc bbd bbe bbi bbm bbr bbs bbt bbu bcb bcc bcd bce bci bcm bcr bcs bct bcu bdb bdc bdd bde bdi bdm bdr bds bdt bdu be- beb bec bed bee bei bem ber bes bet beu bi- bib bic bid bie bii bim bir bis bit biu bmb bmc bmd bme bmi bmm bmr bms bmt bmu brb brd bre bri brm brr brs brt bru bsb bsc bsd bse bsi bsm bsr bss bst bsu btb btc btd bte bti btm btr bts btt btu bub buc bud bue bui bum bur bus but buu c-- cbb cbc cbd cbe cbi cbm cbr cbs cbt cbu ccb ccc ccd cce cci ccm ccr ccs cct ccu cdb cdc cdd cde cdi cdm cdr cds cdt cdu ce- ceb cec ced cee cei cem cer ces cet ceu ci- cib cic cid cie cii cim cir cis cit ciu cmb cmc cmd cme cmi cmm cmr cms cmt cmu crb crc crd cre cri crm crr crs crt cru csb csc csd cse csi csm csr css cst csu ctb ctc ctd cte cti ctm ctr cts ctt ctu cub cuc cud cue cui cum cur cus cut cuu dbb dbc dbd dbe dbi dbm dbr dbs dbt dbu dcb dcc dcd dce dci dcm dcr dcs dct dcu ddb ddc ddd dde ddi ddm ddr dds ddt ddu de- deb dec ded dee dei dem der des det deu di- dib dic did die dii dim dir dis dit diu dmb dmc dmd dme dmi dmm dmr dms dmt dmu drb drc drd dre dri drm drr drs drt dru dsb dsc dsd dse dsi dsm dsr dss dst dsu dtb dtc dtd dte dti dtm dtr dts dtt dtu dub duc dud due dui dum dur dus dut ebb ebc ebd ebe ebi ebm ebr ebs ebt ebu ec- ecb ecc ecd ece eci ecm ecr ecs ect ecu ed- edb edc edd ede edi edm edr eds edt edu eeb eec eed eee eem eer ees eet eib eic eid eie eii eim eir eis eit eiu em- emb emc emd eme emi emm emr ems emt emu erb erc erd ere eri erm err ers ert eru es- esb esc esd ese esi esm esr ess est esu etb etc etd ete eti etm etr ets ett etu eu- eub euc eud eue eui eur eus eut i-d ibb ibc ibd ibe ibi ibm ibr ibs ibt ibu icb icc icd ice ici icm icr ics ict icu idb idc idd ide idi idm idr ids idt idu ie- iec ied iee iei iem ier ies iet iib iic iid iie iii iim iir iis iit iiu im- imb imc imd ime imi imm ims imt imu ir- irb irc ird ire iri irm irr irs irt iru is- isb isc isd ise isi ism isr iss ist isu itb itc itd ite iti itm its itt itu iu- iub iuc iud iue iui ium iur ius iut m-r mbb mbc mbd mbe mbi mbm mbr mbs mbt mbu mc- mcb mcc mcd mce mci mcm mcr mcs mct mcu mdb mdc mdd mde mdi mdm mdr mds mdt mdu meb mec med mee mei mem mer mes met meu mi- mib mic mid mie mii mim mir mis mit miu mmb mmc mmd mme mmi mmm mmr mms mmt mmu mrb mrc mrd mre mri mrm mrr mrs mrt mru msb msc msd mse msi msm msr mss mst msu mtb mtc mtd mte mti mtm mtr mts mtt mtu mub muc mud mue mui mum mur mus mut muu rbb rbc rbd rbe rbi rbm rbr rbs rbt rbu rcb rcc rcd rce rci rcm rcr rcs rct rcu rdb rdc rdd rde rdi rdm rdr rds rdt rdu re- reb rec red ree rei rem rer res ret reu rib ric rid rie rii rim rir ris rit rmb rmc rmd rme rmi rmm rmr rms rmt rrb rrc rrd rri rrm rrr rrs rrt rru rsb rsc rsd rse rsi rsm rsr rss rst rsu rtb rtc rtd rte rti rtm rtr rts rtt rtu rub ruc rud rue rui rum rur rus rut ruu sbb sbc sbd sbe sbi sbm sbr sbs sbt sbu scb scc scd sce sci scm scr scs sct scu sdb sdc sdd sde sdi sdm sdr sds sdt sdu se- seb sec sed see sei sem ser ses set seu sib sic sid sie sii sim sir sis sit siu smb smc smd sme smi smm smr sms smt smu sr- srb src srd sre sri srm srr srs srt ss- ssb ssc ssd sse ssi ssm ssr sss sst ssu stb stc std ste sti stm str sts stt stu sub suc sud sue sui sum sur sus sut suu tbb tbc tbd tbe tbi tbm tbr tbs tbt tbu tcb tcc tcd tce tci tcm tcr tcs tct tcu tdb tdc tdd tde tdi tdm tdr tds tdt tdu te- teb tec ted tee tei tem ter tes tet teu tib tic tid tie tii tim tir tis tit tiu tmb tmc tmd tme tmi tmm tmr tms tmt tmu trb trc trd tre tri trm trr trs trt tru tsb tsc tsd tse tsi tsm tsr tss tst tsu ttb ttc ttd tte tti ttm ttr tts ttt ttu tub tuc tud tue tui tum tur tus tut tuu ubb ubc ube ubi ubr ubs ubt ubu ucb ucc ucd uce uci ucm ucr ucs uct ucu udb udc udd ude udi udm udr uds udt udu ueb uec ued uee uei uem uer ues uet uib uic uid uie uii uim uir uis uit uiu um- umb umc umd ume umi umm umr ums umt umu ur- urb urc urd ure uri urm urr urs urt uru usb usc usd use usi usm usr uss ust usu utb utc utd ute uti utm utr