-ic c-- ccc ccd cci cck cco ccp ccs cdc cdd cdi cdk cdo cdp cds ci- cic cid cii cik cio cip cis ckc ckd cki cko cks co- coc cod coi cok coo cop cos cpc cpd cpi cpk cpo cpp cps csc csd csi csk cso csp css dcc dcd dci dck dco dcp dcs ddc ddd ddi ddk ddo ddp dds di- dic did dii dik dio dip dis dkc dki dkk dko dkp dks doc dod doi dok doo dop dos dpc dpd dpi dpk dpo dpp dps dsc dsd dsi dsk dso dsp dss i-d icc icd ici ick ico icp ics idc idd idi idk ido idp ids iic iid iii iio iip iis ikc iki ikk iko iks io- ioc iod ioi ioo iop ios ipc ipd ipi ipo ipp ips is- isc isd isi isk iso isp iss kcc kcd kci kck kcp kcs kdc kdk kdo kdp kds kic kid kii kik kio kip kis kkc kki kkk kkp kks koc kod koi kok koo kop kos kpc kpd kpi kpk kpo kpp kps ksc ksd ksi ksk kso ksp kss o-i oc- occ ocd oci ock oco ocp ocs odc odd odi odo odp ods oic oid oii oik oio oip ois okc okd oki okk oko okp oks oo- ooc ood ooi ook ooo oop oos op- opc opd opi opk opo opp ops os- osc osd osi osk oso osp oss p-p pcc pcd pci pck pco pcp pcs pdc pdd pdi pdk pdo pdp pds pic pid pii pik pio pip pis pkc pkd pki pko pkp pks poc pod poi pok poo pop pos ppc ppd ppi ppk ppo ppp pps ps- psc psd psi psk pso psp pss scc scd sci sck sco scp scs sdc sdd sdi sdk sdo sdp sds sic sid sii sik sio sip sis sk- skc skd ski skk sko skp sks soc sod soi sok soo sop sos spc spd spi spk spo spp sps ss- ssc ssd ssi ssk sso ssp sss