-ic a-a a-c a-i aaa aac aae aaf aai aao aap aas ac- aca acc ace acf aci aco acp acs aea aec aee aef aei aeo aep aes af- afa afc afe aff afi afo afp afs ai- aia aic aie aif aii aio aip ais aoa aoc aoe aof aoi aoo aop aos ap- apa apc ape apf api apo app aps as- asa asc ase asf asi aso asp ass c-- caa cac cae caf cai cao cap cas cca ccc cce ccf cci cco ccp ccs ce- cea cec cee cef cei ceo cep ces cfa cfc cfe cff cfi cfo cfp cfs ci- cia cic cie cif cii cio cip cis co- coa coc coe cof coi coo cop cos cpa cpc cpe cpf cpi cpo cpp cps csa csc cse csf csi cso csp css eaa eac eae eaf eai eao eap eas ec- eca ecc ece ecf eci eco ecs eea eec eee eef eeo eep ees ef- efa efc efe eff efi efo efp efs eia eic eie eif eii eio eip eis eo- eoa eoc eoe eof eoi eoo eop eos ep- epa epc epe epf epi epo epp eps es- esa esc ese esf esi eso esp ess faa fac fae faf fai fao fap fas fca fcc fce fcf fci fco fcp fcs fea fec fee fef fei feo fep fes ffa ffc ffe fff ffi ffo ffp ffs fia fic fie fif fii fip fis foa foc foe fof foi foo fop fos fpa fpc fpe fpi fpo fpp fps fsa fsc fse fsf fsi fso fsp fss i-f ia- iaa iac iae iaf iai iao iap ias ica icc ice icf ici ico icp ics ie- iea iec iee ief iei iep ies ifa ifc ife iff ifi ifo ifp ifs iia iic iie iif iii iio iip iis io- ioa ioc ioe iof ioi ioo iop ios ipa ipc ipe ipf ipi ipo ipp ips is- isa isc ise isf isi iso isp iss o-i oaa oac oae oaf oai oao oap oas oc- oca occ ocf oci oco ocp ocs oea oec oee oef oei oeo oep oes of- ofa ofc ofe off ofi ofo ofp ofs oia oic oie oif oii oio oip ois oo- ooa ooc oof ooi ooo oop oos op- opa opc ope opf opi opo opp ops os- osa osc ose osf osi oso osp oss p-p paa pac pae paf pai pao pap pas pca pcc pce pcf pci pco pcp pcs pea pec pee pef pei peo pep pes pfa pfc pfe pff pfi pfo pfp pfs pia pic pie pif pii pio pip pis poa poc poe pof poi poo pop pos ppa ppc ppe ppf ppi ppo ppp pps ps- psa psc pse psf psi pso psp pss saa sac sae saf sai sao sap sas sca scc sce scf sci sco scp scs se- sea sec see sef sei seo sep ses sfa sfc sfe sff sfi sfo sfp sfs sia sic sie sif sii sio sip sis soa soc soe sof soi soo sop sos spa spc spe spf spi spo spp sps ss- ssa ssc sse ssf ssi sso ssp sss