a-a a-c aaa aac aae aah aav ac- aca acc ace ach acv aea aec aee aeh aev aha ahc ahe ahh ahv av- ava avc ave avh c-- caa cac cae cah cav cca ccc cce cch ccv ce- cea cec cee ceh cev ch- cha chc che chh chv cva cvc cve cvh cvv eaa eac eae eah eav ec- eca ecc ece ech ecv eea eec eee eev eha ehc ehe ehh ehv eva evc eve evh evv haa hac hae hah hav hca hcc hce hch hcv he- hea hec hee heh hev hha hhc hhe hhh hhv hv- hva hvc hvv v-a v-e vaa vac vae vah vav vca vcc vce vch vea vec vee veh vh- vha vhc vhe vva vvc vvv