-ic c-- ccc ccd ccf cci ccm cco ccs cdc cdd cdf cdi cdm cdo cds cfc cfd cff cfi cfm cfo cfs ci- cic cid cif cii cim cio cis cmc cmd cmf cmi cmm cmo cms co- coc cod cof coi com coo cos csc csd csf csi csm cso css dcc dcd dcf dci dcm dco dcs ddc ddd ddf ddi ddm ddo dds dfc dfd dff dfi dfm dfo dfs di- dic did dif dii dim dio dis dmc dmd dmf dmi dmm dmo dms doc dod dof doi dom doo dos dsc dsd dsf dsi dsm dso dss fcc fcd fcf fci fcm fco fcs fdc fdd fdf fdi fdm fdo fds ffc ffd fff ffi ffm ffo ffs fic fid fif fii fim fis fmc fmd fmf fmi fmm fmo fms foc fof foi fom foo fos fsc fsd fsf fsi fsm fso fss i-d i-f icc icd icf ici icm ico ics idc idd idf idi idm ido ids ifc ifd iff ifi ifm ifo ifs iic iid iif iii iim iio iis im- imc imd imf imi imm imo ims io- ioc iod iof ioi iom ioo ios is- isc isd isf isi ism iso iss m-f m-o mc- mcc mcd mcf mci mcm mco mcs mdc mdd mdf mdi mdm mdo mds mfc mfd mff mfi mfm mfo mfs mi- mic mid mif mii mim mio mis mmc mmd mmf mmi mmm mmo mms moc mod mof moi mom moo mos msc msd msf msi msm mso mss o-i oc- occ ocd ocf oci ocm oco ocs odc odd odf odi odm odo ods of- ofc ofd off ofi ofm ofo ofs oic oid oif oii oim oio ois om- omc omd omf omi omm omo oms oo- ooc ood oof ooi oom ooo oos os- osc osd osf osi osm oso oss scc scd scf sci scm sco scs sdc sdd sdf sdi sdm sdo sds sfc sfd sff sfi sfm sfo sfs sic sid sif sii sim sio sis smc smd smf smi smm smo sms soc sod sof soi som soo sos ss- ssc ssd ssf ssi ssm sso sss