-ic bbb bbc bbd bbi bbm bbo bbr bbs bcb bcc bcd bci bcm bco bcr bcs bdb bdc bdd bdi bdm bdo bdr bds bi- bib bic bid bii bim bio bir bis bmb bmc bmd bmi bmm bmo bmr bms bob boc bod boi bom boo bor bos brb brd bri brm bro brr brs bsb bsc bsd bsi bsm bso bsr bss c-- cbb cbc cbd cbi cbm cbo cbr cbs ccb ccc ccd cci ccm cco ccr ccs cdb cdc cdd cdi cdm cdo cdr cds ci- cib cic cid cii cim cio cir cis cmb cmc cmd cmi cmm cmo cmr cms co- cob coc cod coi com coo cor cos crb crc crd cri crm cro crr crs csb csc csd csi csm cso csr css dbb dbc dbd dbi dbm dbo dbr dbs dcb dcc dcd dci dcm dco dcr dcs ddb ddc ddd ddi ddm ddo ddr dds di- dib dic did dii dim dio dir dis dmb dmc dmd dmi dmm dmo dmr dms dob doc dod doi dom doo dor dos drb drc drd dri drm dro drr drs dsb dsc dsd dsi dsm dso dsr dss i-d ibb ibc ibd ibi ibm ibo ibr ibs icb icc icd ici icm ico icr ics idb idc idd idi idm ido idr ids iib iic iid iii iim iio iir iis im- imb imc imd imi imm imo ims io- iob ioc iod ioi iom ioo ior ios ir- irb irc ird iri irm iro irr irs is- isb isc isd isi ism iso isr iss m-o m-r mbb mbc mbd mbi mbm mbo mbr mbs mc- mcb mcc mcd mci mcm mco mcr mcs mdb mdc mdd mdi mdm mdo mdr mds mi- mib mic mid mii mim mio mir mis mmb mmc mmd mmi mmm mmo mmr mms mob moc mod moi mom moo mor mos mrb mrc mrd mri mrm mro mrr mrs msb msc msd msi msm mso msr mss o-i ob- obb obc obd obi obm obo obr obs oc- ocb occ ocd oci ocm oco ocr ocs odb odc odd odi odm odo odr ods oib oic oid oii oim oio oir ois om- omb omc omd omi omm omo omr oms oo- oob ooc ood ooi oom ooo oor oos or- orb orc ord ori orm oro orr ors os- osb osc osd osi osm oso osr oss rbb rbc rbd rbi rbm rbo rbr rbs rcb rcc rcd rci rcm rco rcr rcs rdb rdc rdd rdi rdm rdo rdr rds rib ric rid rii rim rio rir ris rmb rmc rmd rmi rmm rmo rmr rms rob roc rod roi rom roo ror ros rrb rrc rrd rri rrm rrr rrs rsb rsc rsd rsi rsm rso rsr rss sbb sbc sbd sbi sbm sbo sbr sbs scb scc scd sci scm sco scr scs sdb sdc sdd sdi sdm sdo sdr sds sib sic sid sii sim sio sir sis smb smc smd smi smm smo smr sms sob soc sod soi som soo sor sos sr- srb src srd sri srm sro srr srs ss- ssb ssc ssd ssi ssm sso ssr sss