a-a a-c aaa aac aae aah aak aav ac- aca acc ace ach ack acv aea aec aee aeh aek aev aha ahc ahe ahh ahk ahv aka akc ake akh akk akv av- ava avc ave avh avk c-- caa cac cae cah cak cav cca ccc cce cch cck ccv ce- cea cec cee ceh cek cev ch- cha chc che chh chk chv cka ckc ckh cva cvc cve cvh cvk cvv eaa eac eae eah eak eav ec- eca ecc ece ech eck ecv eea eec eee eek eev eha ehc ehe ehh ehv eka ekc eke ekh ekv eva evc eve evh evv haa hac hae hah hak hav hca hcc hce hch hck hcv he- hea hec hee heh hek hev hha hhc hhe hhh hhk hhv hka hkh hkk hv- hva hvc hvk hvv ka- kaa kac kae kah kak kav kca kcc kce kch kck ke- kea kec kee keh kek kev kha khe khh khk khv kkc kke kkh kkk kkv kva kvh kvk kvv v-a v-e vaa vac vae vah vak vav vca vcc vce vch vea vec vee veh vek vh- vha vhc vhe vka vva vvc vvv