-ic c-- ccc cci cck ccm cco ccs ci- cic cii cik cim cio cis ckc cki ckm cko cks cmc cmi cmk cmm cmo cms co- coc coi cok com coo cos csc csi csk csm cso css icc ici ick icm ico ics iic iii iim iio iis ikc iki ikk iko iks im- imc imi imm imo ims io- ioc ioi iom ioo ios is- isc isi isk ism iso iss kcc kci kck kcm kcs kic kii kik kim kio kis kkc kki kkk kkm kks kmc kmi kmk kmm kmo kms koc koi kok kom koo kos ksc ksi ksk ksm kso kss m-o mc- mcc mci mck mcm mco mcs mi- mic mii mik mim mio mis mkc mkk mkm mko mks mmc mmi mmk mmm mmo mms moc moi mok mom moo mos msc msi msk msm mso mss o-i oc- occ oci ock ocm oco ocs oic oii oik oim oio ois okc oki okk oko oks om- omc omi omm omo oms oo- ooc ooi ook oom ooo oos os- osc osi osk osm oso oss scc sci sck scm sco scs sic sii sik sim sio sis sk- skc ski skk skm sko sks smc smi smk smm smo sms soc soi sok som soo sos ss- ssc ssi ssk ssm sso sss