a-a a-b aaa aab aae aah aav ab- aba abb abe abh abv aea aeb aee aeh aev aha ahb ahe ahh ahv av- ava avb ave avh baa bab bae bah bav bba bbb bbe bbh be- bea beb bee beh bev bha bhb bhe bhh bhv bva bvb bve bvh bvv eaa eab eae eah eav eba ebb ebe ebh ebv eea eeb eee eev eha ehb ehe ehh ehv eva evb eve evh evv haa hab hae hah hav hba hbb hbe hbh hbv he- hea heb hee heh hev hha hhb hhe hhh hhv hv- hva hvb hvv v-a v-e vaa vab vae vah vav vba vbh vbv vea veb vee veh vh- vha vhb vhe vva vvb vvv