-ic -ol c-- ccc ccd cci cck ccl cco ccp ccs cdc cdd cdi cdk cdl cdo cdp cds ci- cic cid cii cik cil cio cip cis ckc ckd cki cko cks cl- clc cld cli clk cll clo clp cls co- coc cod coi cok col coo cop cos cpc cpd cpi cpk cpl cpo cpp cps csc csd csi csk csl cso csp css dcc dcd dci dck dcl dco dcp dcs ddc ddd ddi ddk ddl ddo ddp dds di- dic did dii dik dil dio dip dis dkc dki dkk dkl dko dkp dks dl- dlc dld dli dlk dll dlo dlp dls doc dod doi dok dol doo dop dos dpc dpd dpi dpk dpl dpo dpp dps dsc dsd dsi dsk dsl dso dsp dss i-d icc icd ici ick icl ico icp ics idc idd idi idk idl ido idp ids iic iid iii iil iio iip iis ikc iki ikk ikl iko iks il- ilc ild ili ilk ill ilo ilp ils io- ioc iod ioi iol ioo iop ios ipc ipd ipi ipl ipo ipp ips is- isc isd isi isk isl iso isp iss kcc kcd kci kck kcl kcp kcs kdc kdk kdl kdo kdp kds kic kid kii kik kil kio kip kis kkc kki kkk kkl kkp kks kl- klc kld kli klo kls koc kod koi kok kol koo kop kos kpc kpd kpi kpk kpl kpo kpp kps ksc ksd ksi ksk ksl kso ksp kss l-p lcc lcd lci lck lcl lco lcp lcs ldc ldd ldi ldk ldl ldo ldp lds lic lid lii lik lil lio lip lis lkl lkp lks llc lld lli llk lll llo llp lls loc lod loi lok lol loo lop los lpc lpd lpi lpk lpl lpo lpp lps lsc lsd lsi lsk lsl lso lsp lss o-i oc- occ ocd oci ock ocl oco ocp ocs odc odd odi odl odo odp ods oic oid oii oik oil oio oip ois okc okd oki okk okl oko okp oks olc old oli olk oll olo olp ols oo- ooc ood ooi ook ool ooo oop oos op- opc opd opi opk opl opo opp ops os- osc osd osi osk osl oso osp oss p-p pcc pcd pci pck pcl pco pcp pcs pdc pdd pdi pdk pdl pdo pdp pds pic pid pii pik pil pio pip pis pkc pkd pki pkl pko pkp pks plc pld pli plk pll plo plp pls poc pod poi pok pol poo pop pos ppc ppd ppi ppk ppl ppo ppp pps ps- psc psd psi psk psl pso psp pss scc scd sci sck scl sco scp scs sdc sdd sdi sdk sdl sdo sdp sds sic sid sii sik sil sio sip sis sk- skc skd ski skk skl sko skp sks slc sld sli slk sll slo slp sls soc sod soi sok sol soo sop sos spc spd spi spk spl spo spp sps ss- ssc ssd ssi ssk ssl sso ssp sss