-ic c-- ccc ccf cci ccm cco ccs cct cfc cff cfi cfm cfo cfs cft ci- cic cif cii cim cio cis cit cmc cmf cmi cmm cmo cms cmt co- coc cof coi com coo cos cot csc csf csi csm cso css cst ctc ctf cti ctm cto cts ctt fcc fcf fci fcm fco fcs fct ffc fff ffi ffm ffo ffs fft fic fif fii fim fis fit fmc fmf fmi fmm fmo fms fmt foc fof foi fom foo fos fot fsc fsf fsi fsm fso fss fst ftc ftf fti ftm fto fts ftt i-f icc icf ici icm ico ics ict ifc iff ifi ifm ifo ifs ift iic iif iii iim iio iis iit im- imc imf imi imm imo ims imt io- ioc iof ioi iom ioo ios iot is- isc isf isi ism iso iss ist itc itf iti itm ito its itt m-f m-o mc- mcc mcf mci mcm mco mcs mct mfc mff mfi mfm mfo mfs mft mi- mic mif mii mim mio mis mit mmc mmf mmi mmm mmo mms mmt moc mof moi mom moo mos mot msc msf msi msm mso mss mst mtc mtf mti mtm mto mts mtt o-i oc- occ ocf oci ocm oco ocs oct of- ofc off ofi ofm ofo ofs oft oic oif oii oim oio ois oit om- omc omf omi omm omo oms omt oo- ooc oof ooi oom ooo oos oot os- osc osf osi osm oso oss ost ot- otc otf oti otm oto ots ott scc scf sci scm sco scs sct sfc sff sfi sfm sfo sfs sft sic sif sii sim sio sis sit smc smf smi smm smo sms smt soc sof soi som soo sos sot ss- ssc ssf ssi ssm sso sss sst stc stf sti stm sto sts stt tcc tcf tci tcm tco tcs tct tfc tff tfi tfm tfo tfs tft tic tif tii tim tio tis tit tmc tmf tmi tmm tmo tms tmt to- toc tof toi tom too tos tot tsc tsf tsi tsm tso tss tst ttc ttf tti ttm tto tts ttt