-ic c-- ccc ccd cce cci cck cco ccp ccs cdc cdd cde cdi cdk cdo cdp cds ce- cec ced cee cei cek ceo cep ces ci- cic cid cie cii cik cio cip cis ckc ckd cki cko cks co- coc cod coe coi cok coo cop cos cpc cpd cpe cpi cpk cpo cpp cps csc csd cse csi csk cso csp css dcc dcd dce dci dck dco dcp dcs ddc ddd dde ddi ddk ddo ddp dds de- dec ded dee dei dek deo dep des di- dic did die dii dik dio dip dis dkc dke dki dkk dko dkp dks doc dod doe doi dok doo dop dos dpc dpd dpe dpi dpk dpo dpp dps dsc dsd dse dsi dsk dso dsp dss ec- ecc ecd ece eci eck eco ecs ed- edc edd ede edi edk edo edp eds eec eed eee eek eeo eep ees eic eid eie eii eik eio eip eis ekc ekd eke eki eko ekp eks eo- eoc eod eoe eoi eok eoo eop eos ep- epc epd epe epi epo epp eps es- esc esd ese esi esk eso esp ess i-d icc icd ice ici ick ico icp ics idc idd ide idi idk ido idp ids ie- iec ied iee iei iek iep ies iic iid iie iii iio iip iis ikc ike iki ikk iko iks io- ioc iod ioe ioi ioo iop ios ipc ipd ipe ipi ipo ipp ips is- isc isd ise isi isk iso isp iss kcc kcd kce kci kck kcp kcs kdc kde kdk kdo kdp kds ke- kec ked kee kei kek keo kep kes kic kid kie kii kik kio kip kis kkc kke kki kkk kkp kks koc kod koe koi kok koo kop kos kpc kpd kpe kpi kpk kpo kpp kps ksc ksd kse ksi ksk kso ksp kss o-i oc- occ ocd oci ock oco ocp ocs odc odd ode odi odo odp ods oec oed oee oei oeo oep oes oic oid oie oii oik oio oip ois okc okd oke oki okk oko okp oks oo- ooc ood ooi ook ooo oop oos op- opc opd ope opi opk opo opp ops os- osc osd ose osi osk oso osp oss p-p pcc pcd pce pci pck pco pcp pcs pdc pdd pde pdi pdk pdo pdp pds pec ped pee pei pek peo pep pes pic pid pie pii pik pio pip pis pkc pkd pke pki pko pkp pks poc pod poe poi pok poo pop pos ppc ppd ppe ppi ppk ppo ppp pps ps- psc psd pse psi psk pso psp pss scc scd sce sci sck sco scp scs sdc sdd sde sdi sdk sdo sdp sds se- sec sed see sei sek seo sep ses sic sid sie sii sik sio sip sis sk- skc skd ske ski skk sko skp sks soc sod soe soi sok soo sop sos spc spd spe spi spk spo spp sps ss- ssc ssd sse ssi ssk sso ssp sss