-ic c-- ccc cci ccm cco ccr ccx ci- cic cii cim cio cir cix cmc cmi cmm cmo cmr cmx co- coc coi com coo cor cox crc cri crm cro crr crx cxc cxi cxo cxr cxx icc ici icm ico icr iic iii iim iio iir iix im- imc imi imm imo imx io- ioc ioi iom ioo ior ir- irc iri irm iro irr irx ixc ixi m-o m-r mc- mcc mci mcm mco mcr mcx mi- mic mii mim mio mir mix mmc mmi mmm mmo mmr mmx moc moi mom moo mor mox mrc mri mrm mro mrr mrx mxc mxi mxr o-i oc- occ oci ocm oco ocr ocx oic oii oim oio oir om- omc omi omm omo omr omx oo- ooc ooi oom ooo oor oox or- orc ori orm oro orr orx ox- oxc oxi oxo oxx rcc rci rcm rco rcr rcx ric rii rim rio rir rix rmc rmi rmm rmo rmr rmx roc roi rom roo ror rox rrc rri rrm rrr rxr xci xcr xcx xic xii xio xix xmc xmi xmm xmo xmr xmx xoc xoi xom xoo xor xox xrc xrx xxi xxo xxx