-ic c-- ccc ccd ccf cci cck ccs cdc cdd cdf cdi cdk cds cfc cfd cff cfi cfk cfs ci- cic cid cif cii cik cis ckc ckd cki cks csc csd csf csi csk css dcc dcd dcf dci dck dcs ddc ddd ddf ddi ddk dds dfc dfd dff dfi dfk dfs di- dic did dif dii dik dis dkc dki dkk dks dsc dsd dsf dsi dsk dss fcc fcd fcf fci fck fcs fdc fdd fdf fdi fdk fds ffc ffd fff ffi ffk ffs fic fid fif fii fik fis fkc fkf fki fkk fsc fsd fsf fsi fsk fss i-d i-f icc icd icf ici ick ics idc idd idf idi idk ids ifc ifd iff ifi ifs iic iid iif iii iis ikc ikf iki ikk iks is- isc isd isf isi isk iss kcc kcd kci kck kcs kdc kdf kdk kds kfc kfd kff kfi kfs kic kid kif kii kik kis kkc kki kkk kks ksc ksd ksf ksi ksk kss scc scd scf sci sck scs sdc sdd sdf sdi sdk sds sfc sfd sff sfi sfk sfs sic sid sif sii sik sis sk- skc skd skf ski skk sks ss- ssc ssd ssf ssi ssk sss