-ic a-a a-c a-i aaa aac aae aai aak aao aap aas ac- aca acc ace aci ack aco acp acs aea aec aee aei aek aeo aep aes ai- aia aic aie aii aik aio aip ais aka akc ake aki akk ako akp aks aoa aoc aoe aoi aok aoo aop aos ap- apa apc ape api apk apo app aps as- asa asc ase asi ask aso asp ass c-- caa cac cae cai cak cao cap cas cca ccc cce cci cck cco ccp ccs ce- cea cec cee cei cek ceo cep ces ci- cia cic cie cii cik cio cip cis cka ckc cki cko cks co- coa coc coe coi cok coo cop cos cpa cpc cpe cpi cpk cpo cpp cps csa csc cse csi csk cso csp css eaa eac eae eai eak eao eap eas ec- eca ecc ece eci eck eco ecs eea eec eee eek eeo eep ees eia eic eie eii eik eio eip eis eka ekc eke eki eko ekp eks eo- eoa eoc eoe eoi eok eoo eop eos ep- epa epc epe epi epo epp eps es- esa esc ese esi esk eso esp ess ia- iaa iac iae iai iao iap ias ica icc ice ici ick ico icp ics ie- iea iec iee iei iek iep ies iia iic iie iii iio iip iis ika ikc ike iki ikk iko iks io- ioa ioc ioe ioi ioo iop ios ipa ipc ipe ipi ipo ipp ips is- isa isc ise isi isk iso isp iss ka- kaa kac kae kai kak kao kap kas kca kcc kce kci kck kcp kcs ke- kea kec kee kei kek keo kep kes kia kic kie kii kik kio kip kis kkc kke kki kkk kkp kks koa koc koe koi kok koo kop kos kpa kpc kpe kpi kpk kpo kpp kps ksa ksc kse ksi ksk kso ksp kss o-i oaa oac oae oai oak oao oap oas oc- oca occ oci ock oco ocp ocs oea oec oee oei oeo oep oes oia oic oie oii oik oio oip ois oka okc oke oki okk oko okp oks oo- ooa ooc ooi ook ooo oop oos op- opa opc ope opi opk opo opp ops os- osa osc ose osi osk oso osp oss p-p paa pac pae pai pak pao pap pas pca pcc pce pci pck pco pcp pcs pea pec pee pei pek peo pep pes pia pic pie pii pik pio pip pis pka pkc pke pki pko pkp pks poa poc poe poi pok poo pop pos ppa ppc ppe ppi ppk ppo ppp pps ps- psa psc pse psi psk pso psp pss saa sac sae sai sak sao sap sas sca scc sce sci sck sco scp scs se- sea sec see sei sek seo sep ses sia sic sie sii sik sio sip sis sk- ska skc ske ski skk sko skp sks soa soc soe soi sok soo sop sos spa spc spe spi spk spo spp sps ss- ssa ssc sse ssi ssk sso ssp sss