-ic c-- ccc ccd cci cck cco ccp ccs cdc cdd cdi cdk cdo cdp cds cdy ci- cic cid cii cik cio cip cis ckc ckd cki cko cks cky co- coc cod coi cok coo cop cos coy cpc cpd cpi cpk cpo cpp cps csc csd csi csk cso csp css csy cyc cyd cyk cyo cyp cys dcc dcd dci dck dco dcp dcs ddc ddd ddi ddk ddo ddp dds ddy di- dic did dii dik dio dip dis diy dkc dki dkk dko dkp dks doc dod doi dok doo dop dos doy dpc dpd dpi dpk dpo dpp dps dsc dsd dsi dsk dso dsp dss dsy dy- dyc dyd dyk dyo dyp dys dyy i-d icc icd ici ick ico icp ics icy idc idd idi idk ido idp ids idy iic iid iii iio iip iis ikc iki ikk iko iks io- ioc iod ioi ioo iop ios ipc ipd ipi ipo ipp ips ipy is- isc isd isi isk iso isp iss isy iyc iyo iys iyy kcc kcd kci kck kcp kcs kdc kdk kdo kdp kds kdy kic kid kii kik kio kip kis kkc kki kkk kkp kks kky koc kod koi kok koo kop kos koy kpc kpd kpi kpk kpo kpp kps ksc ksd ksi ksk kso ksp kss kyc kyd kyo kyp kys 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 opy os- osc osd osi osk oso osp oss oyd oyi oyo oys 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 pky poc pod poi pok poo pop pos poy ppc ppd ppi ppk ppo ppp pps ps- psc psd psi psk pso psp pss psy py- pyc pyd pyk pyo pys scc scd sci sck sco scp scs sdc sdd sdi sdk sdo sdp sds sdy sic sid sii sik sio sip sis sk- skc skd ski skk sko skp sks sky soc sod soi sok soo sop sos soy spc spd spi spk spo spp sps spy ss- ssc ssd ssi ssk sso ssp sss sy- syc syd syi syk syp sys ycc ycd yci yco ycp ycs ycy ydo yds ydy yid yii yio yip yis yki ykk yoc yod yoi yok yoo yop yos yoy ypd ypo yps ysc ysi ysk yso ysp yss ysy yyc yys yyy