-er -ic bbb bbc bbd bbe bbi bbm bbr bbs bcb bcc bcd bce bci bcm bcr bcs bdb bdc bdd bde bdi bdm bdr bds be- beb bec bed bee bei bem ber bes bi- bib bic bid bie bii bim bir bis bmb bmc bmd bme bmi bmm bmr bms brb brd bre bri brm brr brs bsb bsc bsd bse bsi bsm bsr bss c-- cbb cbc cbd cbe cbi cbm cbr cbs ccb ccc ccd cce cci ccm ccr ccs cdb cdc cdd cde cdi cdm cdr cds ce- ceb cec ced cee cei cem cer ces ci- cib cic cid cie cii cim cir cis cmb cmc cmd cme cmi cmm cmr cms crb crc crd cre cri crm crr crs csb csc csd cse csi csm csr css dbb dbc dbd dbe dbi dbm dbr dbs dcb dcc dcd dce dci dcm dcr dcs ddb ddc ddd dde ddi ddm ddr dds de- deb dec ded dee dei dem der des di- dib dic did die dii dim dir dis dmb dmc dmd dme dmi dmm dmr dms drb drc drd dre dri drm drr drs dsb dsc dsd dse dsi dsm dsr dss ebb ebc ebd ebe ebi ebm ebr ebs ec- ecb ecc ecd ece eci ecm ecr ecs ed- edb edc edd ede edi edm edr eds eeb eec eed eee eem eer ees eib eic eid eie eii eim eir eis em- emb emc emd eme emi emm emr ems erb erc erd ere eri erm err ers es- esb esc esd ese esi esm esr ess i-d ibb ibc ibd ibe ibi ibm ibr ibs icb icc icd ice ici icm icr ics idb idc idd ide idi idm idr ids ie- iec ied iee iei iem ier ies iib iic iid iie iii iim iir iis im- imb imc imd ime imi imm ims ir- irb irc ird ire iri irm irr irs is- isb isc isd ise isi ism isr iss m-r mbb mbc mbd mbe mbi mbm mbr mbs mc- mcb mcc mcd mce mci mcm mcr mcs mdb mdc mdd mde mdi mdm mdr mds meb mec med mee mei mem mer mes mi- mib mic mid mie mii mim mir mis mmb mmc mmd mme mmi mmm mmr mms mrb mrc mrd mre mri mrm mrr mrs msb msc msd mse msi msm msr mss rbb rbc rbd rbe rbi rbm rbr rbs rcb rcc rcd rce rci rcm rcr rcs rdb rdc rdd rde rdi rdm rdr rds re- reb rec red ree rei rem rer res rib ric rid rie rii rim rir ris rmb rmc rmd rme rmi rmm rmr rms rrb rrc rrd rri rrm rrr rrs rsb rsc rsd rse rsi rsm rsr rss sbb sbc sbd sbe sbi sbm sbr sbs scb scc scd sce sci scm scr scs sdb sdc sdd sde sdi sdm sdr sds se- seb sec sed see sei sem ser ses sib sic sid sie sii sim sir sis smb smc smd sme smi smm smr sms sr- srb src srd sre sri srm srr srs ss- ssb ssc ssd sse ssi ssm ssr sss