-ic c-- ccc ccf cci cco ccr ccs cfc cff cfi cfo cfr cfs ci- cic cif cii cio cir cis co- coc cof coi coo cor cos crc crf cri cro crr crs csc csf csi cso csr css fcc fcf fci fco fcr fcs ffc fff ffi ffo ffr ffs fic fif fii fir fis foc fof foi foo for fos frc frf fri fro frr frs fsc fsf fsi fso fsr fss i-f icc icf ici ico icr ics ifc iff ifi ifo ifr ifs iic iif iii iio iir iis io- ioc iof ioi ioo ior ios ir- irc irf iri iro irr irs is- isc isf isi iso isr iss o-i oc- occ ocf oci oco ocr ocs of- ofc off ofi ofo ofr ofs oic oif oii oio oir ois oo- ooc oof ooi ooo oor oos or- orc orf ori oro orr ors os- osc osf osi oso osr oss rcc rcf rci rco rcr rcs rfc rff rfi rfo rfr rfs ric rif rii rio rir ris roc rof roi roo ror ros rrc rrf rri rrr rrs rsc rsf rsi rso rsr rss scc scf sci sco scr scs sfc sff sfi sfo sfr sfs sic sif sii sio sir sis soc sof soi soo sor sos sr- src srf sri sro srr srs ss- ssc ssf ssi sso ssr sss