-er a-a aaa aae aak aan aap aar aav aea aee aek aen aep aer aev aka ake akk akn akp akr akv an- ana ane ank ann anp anr anv ap- apa ape apk apn app apr apv ar- ara are ark arn arp arr arv av- ava ave avk avn avp avr eaa eae eak ean eap ear eav eea eee eek een eep eer eev eka eke ekp ekr ekv en- ena ene enk enn enp enr env ep- epa epe epn epp epr era ere erk ern erp err erv eva eve evn evp evr evv ka- kaa kae kak kan kap kar kav ke- kea kee kek ken kep ker kev kke kkk kkn kkp kkr kkv kn- kna kne knk knn knp knr kpa kpe kpk kpn kpp kpr kpv kra krk krn krp krr krv kva kvk kvn kvp kvr kvv naa nae nak nan nap nar nav ne- nea nee nek nen nep ner nev nka nke nkk nkn nkp nkr nna nne nnk nnn nnp nnv npa npe npn npp npr npv nra nre nrk nrn nrp nrr nrv nva nve nvk nvn nvp nvv p-p paa pae pak pan pap par pav pea pee pek pen pep per pev pka pke pkn pkp pkr pn- pna pne pnk pnn pnp pnr pnv ppa ppe ppk ppn ppp ppr ppv pra pre prk prn prp prr prv pva pve pvk pvn pvp pvr pvv ra- raa rae rak ran rap rar rav re- rea ree rek ren rep rer rev rke rkk rkp rkv rna rnn rnp rnr rnv rpa rpe rpk rpn rpp rpr rpv rra rrk rrn rrp rrr rva rve rvn rvp rvr rvv v-a v-e vaa vae vak van vap var vav vea vee vek ven vep ver vka vkp vn- vna vnp vnr vnv vpa vpe vpk vpn vpp vpr vra vre vrk vrn vrp vrr vva vvr vvv