-ic c-- ccc cce cci cck cco ccp ccs ce- cec cee cei cek ceo cep ces ci- cic cie cii cik cio cip cis ckc cki cko cks co- coc coe coi cok coo cop cos cpc cpe cpi cpk cpo cpp cps csc cse csi csk cso csp css ec- ecc ece eci eck eco ecs eec eee eek eeo eep ees eic eie eii eik eio eip eis ekc eke eki eko ekp eks eo- eoc eoe eoi eok eoo eop eos ep- epc epe epi epo epp eps es- esc ese esi esk eso esp ess icc ice ici ick ico icp ics ie- iec iee iei iek iep ies iic iie iii iio iip iis ikc ike iki ikk iko iks io- ioc ioe ioi ioo iop ios ipc ipe ipi ipo ipp ips is- isc ise isi isk iso isp iss kcc kce kci kck kcp kcs ke- kec kee kei kek keo kep kes kic kie kii kik kio kip kis kkc kke kki kkk kkp kks koc koe koi kok koo kop kos kpc kpe kpi kpk kpo kpp kps ksc kse ksi ksk kso ksp kss o-i oc- occ oci ock oco ocp ocs oec oee oei oeo oep oes oic oie oii oik oio oip ois okc oke oki okk oko okp oks oo- ooc ooi ook ooo oop oos op- opc ope opi opk opo opp ops os- osc ose osi osk oso osp oss p-p pcc pce pci pck pco pcp pcs pec pee pei pek peo pep pes pic pie pii pik pio pip pis pkc pke pki pko pkp pks poc poe poi pok poo pop pos ppc ppe ppi ppk ppo ppp pps ps- psc pse psi psk pso psp pss scc sce sci sck sco scp scs se- sec see sei sek seo sep ses sic sie sii sik sio sip sis sk- skc ske ski skk sko skp sks soc soe soi sok soo sop sos spc spe spi spk spo spp sps ss- ssc sse ssi ssk sso ssp sss