-ic c-- ccc ccf cci cco ccs cfc cff cfi cfo cfs ci- cic cif cii cio cis co- coc cof coi coo cos csc csf csi cso css fcc fcf fci fco fcs ffc fff ffi ffo ffs fic fif fii fis foc fof foi foo fos fsc fsf fsi fso fss i-f icc icf ici ico ics ifc iff ifi ifo ifs iic iif iii iio iis io- ioc iof ioi ioo ios is- isc isf isi iso iss o-i oc- occ ocf oci oco ocs of- ofc off ofi ofo ofs oic oif oii oio ois oo- ooc oof ooi ooo oos os- osc osf osi oso oss scc scf sci sco scs sfc sff sfi sfo sfs sic sif sii sio sis soc sof soi soo sos ss- ssc ssf ssi sso sss