-ic c-- ccc ccf cci ccn cco ccr ccs cfc cff cfi cfn cfo cfr cfs ci- cic cif cii cin cio cir cis cn- cnc cnf cni cnn cno cnr cns co- coc cof coi con coo cor cos crc crf cri crn cro crr crs csc csf csi csn cso csr css fcc fcf fci fcn fco fcr fcs ffc fff ffi ffn ffo ffr ffs fic fif fii fin fir fis fnc fnf fni fnn fnr fns foc fof foi fon foo for fos frc frf fri frn fro frr frs fsc fsf fsi fsn fso fsr fss i-f icc icf ici icn ico icr ics ifc iff ifi ifn ifo ifr ifs iic iif iii iin iio iir iis in- inc inf ini inn ino inr ins io- ioc iof ioi ion ioo ior ios ir- irc irf iri irn iro irr irs is- isc isf isi isn iso isr iss n-i ncc ncf nci ncn nco ncr ncs nfc nff nfi nfn nfo nfr nfs nic nif nii nin nio nir nis nnc nnf nni nnn nno nns no- noc nof noi non noo nor nos nrc nrf nri nrn nro nrr nrs nsc nsf nsi nsn nso nsr nss o-i oc- occ ocf oci ocn oco ocr ocs of- ofc off ofi ofn ofo ofr ofs oic oif oii oin oio oir ois on- onc onf oni onn ono onr ons oo- ooc oof ooi oon ooo oor oos or- orc orf ori orn oro orr ors os- osc osf osi osn oso osr oss rcc rcf rci rcn rco rcr rcs rfc rff rfi rfn rfo rfr rfs ric rif rii rin rio rir ris rnc rni rnn rno rnr rns roc rof roi ron roo ror ros rrc rrf rri rrn rrr rrs rsc rsf rsi rsn rso rsr rss scc scf sci scn sco scr scs sfc sff sfi sfn sfo sfr sfs sic sif sii sin sio sir sis snc snf sni snn sno snr sns soc sof soi son soo sor sos sr- src srf sri srn sro srr srs ss- ssc ssf ssi ssn sso ssr sss