-ic bbb bbc bbd bbi bbk bbm bbo bbr bbs bcb bcc bcd bci bck bcm bco bcr bcs bdb bdc bdd bdi bdk bdm bdo bdr bds bi- bib bic bid bii bik bim bio bir bis bkb bkc bkk bkm bko bkr bks bmb bmc bmd bmi bmk bmm bmo bmr bms bob boc bod boi bok bom boo bor bos brb brd bri brk brm bro brr brs bsb bsc bsd bsi bsk bsm bso bsr bss c-- cbb cbc cbd cbi cbk cbm cbo cbr cbs ccb ccc ccd cci cck ccm cco ccr ccs cdb cdc cdd cdi cdk cdm cdo cdr cds ci- cib cic cid cii cik cim cio cir cis ckb ckc ckd cki ckm cko cks cmb cmc cmd cmi cmk cmm cmo cmr cms co- cob coc cod coi cok com coo cor cos crb crc crd cri crk crm cro crr crs csb csc csd csi csk csm cso csr css dbb dbc dbd dbi dbk dbm dbo dbr dbs dcb dcc dcd dci dck dcm dco dcr dcs ddb ddc ddd ddi ddk ddm ddo ddr dds di- dib dic did dii dik dim dio dir dis dkb dkc dki dkk dkm dko dkr dks dmb dmc dmd dmi dmk dmm dmo dmr dms dob doc dod doi dok dom doo dor dos drb drc drd dri drk drm dro drr drs dsb dsc dsd dsi dsk dsm dso dsr dss i-d ibb ibc ibd ibi ibk ibm ibo ibr ibs icb icc icd ici ick icm ico icr ics idb idc idd idi idk idm ido idr ids iib iic iid iii iim iio iir iis ikb ikc iki ikk iko ikr iks im- imb imc imd imi imm imo ims io- iob ioc iod ioi iom ioo ior ios ir- irb irc ird iri irk irm iro irr irs is- isb isc isd isi isk ism iso isr iss kbb kbc kbd kbi kbk kbm kbo kbr kbs kcb kcc kcd kci kck kcm kcr kcs kdb kdc kdk kdm kdo kdr kds kib kic kid kii kik kim kio kir kis kkb kkc kki kkk kkm kkr kks kmb kmc kmd kmi kmk kmm kmo kms kob koc kod koi kok kom koo kor kos krc krd kri krk kro krr krs ksb ksc ksd ksi ksk ksm kso ksr kss m-o m-r mbb mbc mbd mbi mbk mbm mbo mbr mbs mc- mcb mcc mcd mci mck mcm mco mcr mcs mdb mdc mdd mdi mdk mdm mdo mdr mds mi- mib mic mid mii mik mim mio mir mis mkb mkc mkd mkk mkm mko mkr mks mmb mmc mmd mmi mmk mmm mmo mmr mms mob moc mod moi mok mom moo mor mos mrb mrc mrd mri mrk mrm mro mrr mrs msb msc msd msi msk msm mso msr mss o-i ob- obb obc obd obi obk obm obo obr obs oc- ocb occ ocd oci ock ocm oco ocr ocs odb odc odd odi odm odo odr ods oib oic oid oii oik oim oio oir ois okb okc okd oki okk oko okr oks om- omb omc omd omi omm omo omr oms oo- oob ooc ood ooi ook oom ooo oor oos or- orb orc ord ori ork orm oro orr ors os- osb osc osd osi osk osm oso osr oss rbb rbc rbd rbi rbk rbm rbo rbr rbs rcb rcc rcd rci rcm rco rcr rcs rdb rdc rdd rdi rdm rdo rdr rds rib ric rid rii rik rim rio rir ris rkb rkc rkk rkm rko rks rmb rmc rmd rmi rmm rmo rmr rms rob roc rod roi rok rom roo ror ros rrb rrc rrd rri rrk rrm rrr rrs rsb rsc rsd rsi rsk rsm rso rsr rss sbb sbc sbd sbi sbk sbm sbo sbr sbs scb scc scd sci sck scm sco scr scs sdb sdc sdd sdi sdk sdm sdo sdr sds sib sic sid sii sik sim sio sir sis sk- skb skc skd ski skk skm sko skr sks smb smc smd smi smk smm smo smr sms sob soc sod soi sok som soo sor sos sr- srb src srd sri srk srm sro srr srs ss- ssb ssc ssd ssi ssk ssm sso ssr sss