-ic -ol c-- ccc ccd cci cck ccl cco ccs cdc cdd cdi cdk cdl cdo cds ci- cic cid cii cik cil cio cis ckc ckd cki cko cks cl- clc cld cli clk cll clo cls co- coc cod coi cok col coo cos csc csd csi csk csl cso css dcc dcd dci dck dcl dco dcs ddc ddd ddi ddk ddl ddo dds di- dic did dii dik dil dio dis dkc dki dkk dkl dko dks dl- dlc dld dli dlk dll dlo dls doc dod doi dok dol doo dos dsc dsd dsi dsk dsl dso dss i-d icc icd ici ick icl ico ics idc idd idi idk idl ido ids iic iid iii iil iio iis ikc iki ikk ikl iko iks il- ilc ild ili ilk ill ilo ils io- ioc iod ioi iol ioo ios is- isc isd isi isk isl iso iss kcc kcd kci kck kcl kcs kdc kdk kdl kdo kds kic kid kii kik kil kio kis kkc kki kkk kkl kks kl- klc kld kli klo kls koc kod koi kok kol koo kos ksc ksd ksi ksk ksl kso kss lcc lcd lci lck lcl lco lcs ldc ldd ldi ldk ldl ldo lds lic lid lii lik lil lio lis lkl lks llc lld lli llk lll llo lls loc lod loi lok lol loo los lsc lsd lsi lsk lsl lso lss o-i oc- occ ocd oci ock ocl oco ocs odc odd odi odl odo ods oic oid oii oik oil oio ois okc okd oki okk okl oko oks olc old oli olk oll olo ols oo- ooc ood ooi ook ool ooo oos os- osc osd osi osk osl oso oss scc scd sci sck scl sco scs sdc sdd sdi sdk sdl sdo sds sic sid sii sik sil sio sis sk- skc skd ski skk skl sko sks slc sld sli slk sll slo sls soc sod soi sok sol soo sos ss- ssc ssd ssi ssk ssl sso sss