-er a-a a-c aaa aac aae aan aap aar aas aav ac- aca acc ace acn acp acr acs acv aea aec aee aen aep aer aes aev an- ana anc ane ann anp anr ans anv ap- apa apc ape apn app apr aps apv ar- ara arc are arn arp arr ars arv as- asa asc ase asn asp asr ass asv av- ava avc ave avn avp avr avs c-- caa cac cae can cap car cas cav cca ccc cce ccn ccp ccr ccs ccv ce- cea cec cee cen cep cer ces cev cn- cna cnc cne cnn cnp cnr cns cnv cpa cpc cpe cpn cpp cpr cps cpv cra crc cre crn crp crr crs crv csa csc cse csn csp csr css csv cva cvc cve cvn cvp cvr cvs cvv eaa eac eae ean eap ear eas eav ec- eca ecc ece ecn ecr ecs ecv eea eec eee een eep eer ees eev en- ena enc ene enn enp enr ens env ep- epa epc epe epn epp epr eps era erc ere ern erp err ers erv es- esa esc ese esn esp esr ess esv eva evc eve evn evp evr evs evv naa nac nae nan nap nar nas nav nca ncc nce ncn ncp ncr ncs ncv ne- nea nec nee nen nep ner nes nev nna nnc nne nnn nnp nns nnv npa npc npe npn npp npr nps npv nra nrc nre nrn nrp nrr nrs nrv nsa nsc nse nsn nsp nsr nss nsv nva nvc nve nvn nvp nvv p-p paa pac pae pan pap par pas pav pca pcc pce pcn pcp pcr pcs pcv pea pec pee pen pep per pes pev pn- pna pnc pne pnn pnp pnr pns pnv ppa ppc ppe ppn ppp ppr pps ppv pra prc pre prn prp prr prs prv ps- psa psc pse psn psp psr pss psv pva pvc pve pvn pvp pvr pvs pvv ra- raa rac rae ran rap rar ras rav rca rcc rce rcn rcp rcr rcs rcv re- rea rec ree ren rep rer res rev rna rnc rnn rnp rnr rns rnv rpa rpc rpe rpn rpp rpr rps rpv rra rrc rrn rrp rrr rrs rsa rsc rse rsn rsp rsr rss rsv rva rvc rve rvn rvp rvr rvs rvv saa sac sae san sap sar sas sav sca scc sce scn scp scr scs scv se- sea sec see sen sep ser ses sev sna snc sne snn snp snr sns snv spa spc spe spn spp spr sps spv sr- sra src sre srn srp srr srs srv ss- ssa ssc sse ssn ssp ssr sss ssv sva svc sve svn svp svr svs svv v-a v-e vaa vac vae van vap var vas vav vca vcc vce vcn vcp vcr vcs vea vec vee ven vep ver ves vn- vna vnp vnr vns vnv vpa vpc vpe vpn vpp vpr vps vra vrc vre vrn vrp vrr vrs vsa vsc vse vsn vsp vsr vss vsv vva vvc vvr vvs vvv