-er a-a aaa aae aan aap aar aav aea aee aen aep aer aev an- ana ane ann anp anr anv ap- apa ape apn app apr apv ar- ara are arn arp arr arv av- ava ave avn avp avr eaa eae ean eap ear eav eea eee een eep eer eev en- ena ene enn enp enr env ep- epa epe epn epp epr era ere ern erp err erv eva eve evn evp evr evv naa nae nan nap nar nav ne- nea nee nen nep ner nev nna nne nnn nnp nnv npa npe npn npp npr npv nra nre nrn nrp nrr nrv nva nve nvn nvp nvv p-p paa pae pan pap par pav pea pee pen pep per pev pn- pna pne pnn pnp pnr pnv ppa ppe ppn ppp ppr ppv pra pre prn prp prr prv pva pve pvn pvp pvr pvv ra- raa rae ran rap rar rav re- rea ree ren rep rer rev rna rnn rnp rnr rnv rpa rpe rpn rpp rpr rpv rra rrn rrp rrr rva rve rvn rvp rvr rvv v-a v-e vaa vae van vap var vav vea vee ven vep ver vn- vna vnp vnr vnv vpa vpe vpn vpp vpr vra vre vrn vrp vrr vva vvr vvv