-ic a-a a-c a-i aaa aac aae aaf aai aak aao aap ac- aca acc ace acf aci ack aco acp aea aec aee aef aei aek aeo aep af- afa afc afe aff afi afk afo afp ai- aia aic aie aif aii aik aio aip aka akc ake aki akk ako akp aoa aoc aoe aof aoi aok aoo aop ap- apa apc ape apf api apk apo app c-- caa cac cae caf cai cak cao cap cca ccc cce ccf cci cck cco ccp ce- cea cec cee cef cei cek ceo cep cfa cfc cfe cff cfi cfk cfo cfp ci- cia cic cie cif cii cik cio cip cka ckc cki cko co- coa coc coe cof coi cok coo cop cpa cpc cpe cpf cpi cpk cpo cpp eaa eac eae eaf eai eak eao eap ec- eca ecc ece ecf eci eck eco eea eec eee eef eek eeo eep ef- efa efc efe eff efi efo efp eia eic eie eif eii eik eio eip eka ekc eke ekf eki eko ekp eo- eoa eoc eoe eof eoi eok eoo eop ep- epa epc epe epf epi epo epp faa fac fae faf fai fak fao fap fca fcc fce fcf fci fck fco fcp fea fec fee fef fei fek feo fep ffa ffc ffe fff ffi ffk ffo ffp fia fic fie fif fii fik fip fka fkc fkf fki fkk fkp foa foc foe fof foi fok foo fop fpa fpc fpe fpi fpk fpo fpp i-f ia- iaa iac iae iaf iai iao iap ica icc ice icf ici ick ico icp ie- iea iec iee ief iei iek iep ifa ifc ife iff ifi ifo ifp iia iic iie iif iii iio iip ika ikc ike ikf iki ikk iko io- ioa ioc ioe iof ioi ioo iop ipa ipc ipe ipf ipi ipo ipp ka- kaa kac kae kaf kai kak kao kap kca kcc kce kci kck kcp ke- kea kec kee kef kei kek keo kep kfa kfc kff kfi kfo kia kic kie kif kii kik kio kip kkc kke kki kkk kkp koa koc koe kof koi kok koo kop kpa kpc kpe kpf kpi kpk kpo kpp o-i oaa oac oae oaf oai oak oao oap oc- oca occ ocf oci ock oco ocp oea oec oee oef oei oeo oep of- ofa ofc ofe off ofi ofo ofp oia oic oie oif oii oik oio oip oka okc oke oki okk oko okp oo- ooa ooc oof ooi ook ooo oop op- opa opc ope opf opi opk opo opp p-p paa pac pae paf pai pak pao pap pca pcc pce pcf pci pck pco pcp pea pec pee pef pei pek peo pep pfa pfc pfe pff pfi pfk pfo pfp pia pic pie pif pii pik pio pip pka pkc pke pkf pki pko pkp poa poc poe pof poi pok poo pop ppa ppc ppe ppf ppi ppk ppo ppp