-er -ic bbb bbc bbe bbi bbm bbo bbr bbs bbt bcb bcc bce bci bcm bco bcr bcs bct be- beb bec bee bei bem beo ber bes bet bi- bib bic bie bii bim bio bir bis bit bmb bmc bme bmi bmm bmo bmr bms bmt bob boc boe boi bom boo bor bos bot brb bre bri brm bro brr brs brt bsb bsc bse bsi bsm bso bsr bss bst btb btc bte bti btm bto btr bts btt c-- cbb cbc cbe cbi cbm cbo cbr cbs cbt ccb ccc cce cci ccm cco ccr ccs cct ce- ceb cec cee cei cem ceo cer ces cet ci- cib cic cie cii cim cio cir cis cit cmb cmc cme cmi cmm cmo cmr cms cmt co- cob coc coe coi com coo cor cos cot crb crc cre cri crm cro crr crs crt csb csc cse csi csm cso csr css cst ctb ctc cte cti ctm cto ctr cts ctt ebb ebc ebe ebi ebm ebo ebr ebs ebt ec- ecb ecc ece eci ecm eco ecr ecs ect eeb eec eee eem eeo eer ees eet eib eic eie eii eim eio eir eis eit em- emb emc eme emi emm emo emr ems emt eo- eob eoc eoe eoi eom eoo eor eos eot erb erc ere eri erm ero err ers ert es- esb esc ese esi esm eso esr ess est etb etc ete eti etm eto etr ets ett ibb ibc ibe ibi ibm ibo ibr ibs ibt icb icc ice ici icm ico icr ics ict ie- iec iee iei iem ier ies iet iib iic iie iii iim iio iir iis iit im- imb imc ime imi imm imo ims imt io- iob ioc ioe ioi iom ioo ior ios iot ir- irb irc ire iri irm iro irr irs irt is- isb isc ise isi ism iso isr iss ist itb itc ite iti itm ito its itt m-o m-r mbb mbc mbe mbi mbm mbo mbr mbs mbt mc- mcb mcc mce mci mcm mco mcr mcs mct meb mec mee mei mem meo mer mes met mi- mib mic mie mii mim mio mir mis mit mmb mmc mme mmi mmm mmo mmr mms mmt mob moc moe moi mom moo mor mos mot mrb mrc mre mri mrm mro mrr mrs mrt msb msc mse msi msm mso msr mss mst mtb mtc mte mti mtm mto mtr mts mtt o-i ob- obb obc obe obi obm obo obr obs obt oc- ocb occ oci ocm oco ocr ocs oct oeb oec oee oei oem oeo oer oes oet oib oic oie oii oim oio oir ois oit om- omb omc ome omi omm omo omr oms omt oo- oob ooc ooi oom ooo oor oos oot or- orb orc ore ori orm oro orr ors ort os- osb osc ose osi osm oso osr oss ost ot- otb otc ote oti otm oto otr ots ott rbb rbc rbe rbi rbm rbo rbr rbs rbt rcb rcc rce rci rcm rco rcr rcs rct re- reb rec ree rei rem reo rer res ret 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 rrb rrc rri rrm rrr rrs rrt rsb rsc rse rsi rsm rso rsr rss rst rtb rtc rte rti rtm rto rtr rts rtt sbb sbc sbe sbi sbm sbo sbr sbs sbt scb scc sce sci scm sco scr scs sct se- seb sec see sei sem seo ser ses set sib sic sie sii sim sio sir sis sit smb smc sme smi smm smo smr sms smt sob soc soe soi som soo sor sos sot sr- srb src sre sri srm sro srr srs srt ss- ssb ssc sse ssi ssm sso ssr sss sst stb stc ste sti stm sto str sts stt tbb tbc tbe tbi tbm tbo tbr tbs tbt tcb tcc tce tci tcm tco tcr tcs tct te- teb tec tee tei tem teo ter tes tet tib tic tie tii tim tio tir tis tit tmb tmc tme tmi tmm tmo tmr tms tmt to- tob toc toe toi tom too tor tos tot trb trc tre tri trm tro trr trs trt tsb tsc tse tsi tsm tso tsr tss tst ttb ttc tte tti ttm tto ttr tts ttt