-ic bbb bbc bbd bbi bbk bbm bbo bbs bcb bcc bcd bci bck bcm bco bcs bdb bdc bdd bdi bdk bdm bdo bds bi- bib bic bid bii bik bim bio bis bkb bkc bkk bkm bko bks bmb bmc bmd bmi bmk bmm bmo bms bob boc bod boi bok bom boo bos bsb bsc bsd bsi bsk bsm bso bss c-- cbb cbc cbd cbi cbk cbm cbo cbs ccb ccc ccd cci cck ccm cco ccs cdb cdc cdd cdi cdk cdm cdo cds ci- cib cic cid cii cik cim cio cis ckb ckc ckd cki ckm cko cks cmb cmc cmd cmi cmk cmm cmo cms co- cob coc cod coi cok com coo cos csb csc csd csi csk csm cso css dbb dbc dbd dbi dbk dbm dbo dbs dcb dcc dcd dci dck dcm dco dcs ddb ddc ddd ddi ddk ddm ddo dds di- dib dic did dii dik dim dio dis dkb dkc dki dkk dkm dko dks dmb dmc dmd dmi dmk dmm dmo dms dob doc dod doi dok dom doo dos dsb dsc dsd dsi dsk dsm dso dss i-d ibb ibc ibd ibi ibk ibm ibo ibs icb icc icd ici ick icm ico ics idb idc idd idi idk idm ido ids iib iic iid iii iim iio iis ikb ikc iki ikk iko iks im- imb imc imd imi imm imo ims io- iob ioc iod ioi iom ioo ios is- isb isc isd isi isk ism iso iss kbb kbc kbd kbi kbk kbm kbo kbs kcb kcc kcd kci kck kcm kcs kdb kdc kdk kdm kdo kds kib kic kid kii kik kim kio kis kkb kkc kki kkk kkm kks kmb kmc kmd kmi kmk kmm kmo kms kob koc kod koi kok kom koo kos ksb ksc ksd ksi ksk ksm kso kss m-o mbb mbc mbd mbi mbk mbm mbo mbs mc- mcb mcc mcd mci mck mcm mco mcs mdb mdc mdd mdi mdk mdm mdo mds mi- mib mic mid mii mik mim mio mis mkb mkc mkd mkk mkm mko mks mmb mmc mmd mmi mmk mmm mmo mms mob moc mod moi mok mom moo mos msb msc msd msi msk msm mso mss o-i ob- obb obc obd obi obk obm obo obs oc- ocb occ ocd oci ock ocm oco ocs odb odc odd odi odm odo ods oib oic oid oii oik oim oio ois okb okc okd oki okk oko oks om- omb omc omd omi omm omo oms oo- oob ooc ood ooi ook oom ooo oos os- osb osc osd osi osk osm oso oss sbb sbc sbd sbi sbk sbm sbo sbs scb scc scd sci sck scm sco scs sdb sdc sdd sdi sdk sdm sdo sds sib sic sid sii sik sim sio sis sk- skb skc skd ski skk skm sko sks smb smc smd smi smk smm smo sms sob soc sod soi sok som soo sos ss- ssb ssc ssd ssi ssk ssm sso sss