a-a a-c aaa aac aae aan aap aav ac- aca acc ace acn acp acv aea aec aee aen aep aev an- ana anc ane ann anp anv ap- apa apc ape apn app apv av- ava avc ave avn avp c-- caa cac cae can cap cav cca ccc cce ccn ccp ccv ce- cea cec cee cen cep cev cn- cna cnc cne cnn cnp cnv cpa cpc cpe cpn cpp cpv cva cvc cve cvn cvp cvv eaa eac eae ean eap eav ec- eca ecc ece ecn ecv eea eec eee een eep eev en- ena enc ene enn enp env ep- epa epc epe epn epp eva evc eve evn evp evv naa nac nae nan nap nav nca ncc nce ncn ncp ncv ne- nea nec nee nen nep nev nna nnc nne nnn nnp nnv npa npc npe npn npp npv nva nvc nve nvn nvp nvv p-p paa pac pae pan pap pav pca pcc pce pcn pcp pcv pea pec pee pen pep pev pn- pna pnc pne pnn pnp pnv ppa ppc ppe ppn ppp ppv pva pvc pve pvn pvp pvv v-a v-e vaa vac vae van vap vav vca vcc vce vcn vcp vea vec vee ven vep vn- vna vnp vnv vpa vpc vpe vpn vpp vva vvc vvv