-er -ic a-a a-c a-i aaa aac aae aaf aai aan aap aar aas ac- aca acc ace acf aci acn acp acr acs aea aec aee aef aei aen aep aer aes af- afa afc afe aff afi afn afp afr afs ai- aia aic aie aif aii ain aip air ais an- ana anc ane anf ani ann anp anr ans ap- apa apc ape apf api apn app apr aps ar- ara arc are arf ari arn arp arr ars as- asa asc ase asf asi asn asp asr ass c-- caa cac cae caf cai can cap car cas cca ccc cce ccf cci ccn ccp ccr ccs ce- cea cec cee cef cei cen cep cer ces cfa cfc cfe cff cfi cfn cfp cfr cfs ci- cia cic cie cif cii cin cip cir cis cn- cna cnc cne cnf cni cnn cnp cnr cns cpa cpc cpe cpf cpi cpn cpp cpr cps cra crc cre crf cri crn crp crr crs csa csc cse csf csi csn csp csr css eaa eac eae eaf eai ean eap ear eas ec- eca ecc ece ecf eci ecn ecr ecs eea eec eee eef een eep eer ees ef- efa efc efe eff efi efp efr efs eia eic eie eif eii ein eip eir eis en- ena enc ene enf eni enn enp enr ens ep- epa epc epe epf epi epn epp epr eps era erc ere erf eri ern erp err ers es- esa esc ese esf esi esn esp esr ess faa fac fae faf fai fan fap far fas fca fcc fce fcf fci fcn fcp fcr fcs fea fec fee fef fei fen fep fer fes ffa ffc ffe fff ffi ffn ffp ffr ffs fia fic fie fif fii fin fip fir fis fna fnc fne fnf fni fnn fnp fnr fns fpa fpc fpe fpi fpn fpp fpr fps fra frc fre frf fri frn frp frr frs fsa fsc fse fsf fsi fsn fsp fsr fss i-f ia- iaa iac iae iaf iai ian iap iar ias ica icc ice icf ici icn icp icr ics ie- iea iec iee ief iei ien iep ier ies ifa ifc ife iff ifi ifn ifp ifr ifs iia iic iie iif iii iin iip iir iis in- ina inc ine inf ini inn inp inr ins ipa ipc ipe ipf ipi ipn ipp ipr ips ir- ira irc ire irf iri irn irp irr irs is- isa isc ise isf isi isn isp isr iss n-i naa nac nae naf nai nan nap nar nas nca ncc nce ncf nci ncn ncp ncr ncs ne- nea nec nee nef nei nen nep ner nes nfa nfc nfe nff nfi nfn nfp nfr nfs nia nic nie nif nii nin nip nir nis nna nnc nne nnf nni nnn nnp nns npa npc npe npf npi npn npp npr nps nra nrc nre nrf nri nrn nrp nrr nrs nsa nsc nse nsf nsi nsn nsp nsr nss p-p paa pac pae paf pai pan pap par pas pca pcc pce pcf pci pcn pcp pcr pcs pea pec pee pef pei pen pep per pes pfa pfc pfe pff pfi pfn pfp pfr pfs pia pic pie pif pii pin pip pir pis pn- pna pnc pne pnf pni pnn pnp pnr pns ppa ppc ppe ppf ppi ppn ppp ppr pps pra prc pre prf pri prn prp prr prs ps- psa psc pse psf psi psn psp psr pss ra- raa rac rae raf rai ran rap rar ras rca rcc rce rcf rci rcn rcp rcr rcs re- rea rec ree ref rei ren rep rer res rfa rfc rfe rff rfi rfn rfp rfr rfs ria ric rie rif rii rin rip rir ris rna rnc rni rnn rnp rnr rns rpa rpc rpe rpf rpi rpn rpp rpr rps rra rrc rrf rri rrn rrp rrr rrs rsa rsc rse rsf rsi rsn rsp rsr rss saa sac sae saf sai san sap sar sas sca scc sce scf sci scn scp scr scs se- sea sec see sef sei sen sep ser ses sfa sfc sfe sff sfi sfn sfp sfr sfs sia sic sie sif sii sin sip sir sis sna snc sne snf sni snn snp snr sns spa spc spe spf spi spn spp spr sps sr- sra src sre srf sri srn srp srr srs ss- ssa ssc sse ssf ssi ssn ssp ssr sss