c-- ccc ccn ccr ccs ccw cn- cnc cnn cnr cns cnw crc crn crr crs crw csc csn csr css csw cw- cwc cwn cwr cws ncc ncn ncr ncs ncw nnc nnn nns nnw nrc nrn nrr nrs nrw nsc nsn nsr nss nsw nwc nwn nwr nws rcc rcn rcr rcs rcw rnc rnn rnr rns rnw rrc rrn rrr rrs rsc rsn rsr rss rsw rwc rwr rws scc scn scr scs scw snc snn snr sns snw sr- src srn srr srs srw ss- ssc ssn ssr sss ssw swc swn swr sws wcc wcn wcr wcs wcw wn- wnc wnn wns wnw wr- wrc wrn wrr wrs wrw wsc wsn wsr wss wsw wwc wwn www