-ic c-- ccc cci ccn cco ccr ccs ci- cic cii cin cio cir cis cn- cnc cni cnn cno cnr cns co- coc coi con coo cor cos crc cri crn cro crr crs csc csi csn cso csr css icc ici icn ico icr ics iic iii iin iio iir iis in- inc ini inn ino inr ins io- ioc ioi ion ioo ior ios ir- irc iri irn iro irr irs is- isc isi isn iso isr iss n-i ncc nci ncn nco ncr ncs nic nii nin nio nir nis nnc nni nnn nno nns no- noc noi non noo nor nos nrc nri nrn nro nrr nrs nsc nsi nsn nso nsr nss o-i oc- occ oci ocn oco ocr ocs oic oii oin oio oir ois on- onc oni onn ono onr ons oo- ooc ooi oon ooo oor oos or- orc ori orn oro orr ors os- osc osi osn oso osr oss rcc rci rcn rco rcr rcs ric rii rin rio rir ris rnc rni rnn rno rnr rns roc roi ron roo ror ros rrc rri rrn rrr rrs rsc rsi rsn rso rsr rss scc sci scn sco scr scs sic sii sin sio sir sis snc sni snn sno snr sns soc soi son soo sor sos sr- src sri srn sro srr srs ss- ssc ssi ssn sso ssr sss