a-a a-b a-i aaa aab aah aai aav ab- aba abb abh abi abv aha ahb ahh ahi ahv ai- aia aib aih aii aiv av- ava avb avh avi baa bab bah bai bav bba bbb bbh bbi bha bhb bhh bhi bhv bi- bia bib bih bii biv bva bvb bvh bvi bvv h-i haa hab hah hai hav hba hbb hbh hbi hbv hha hhb hhh hhi hhv hia hib hih hii hiv hv- hva hvb hvv i-v ia- iaa iab iah iai iav iba ibb ibh ibi ibv iha ihb ihh ihi ihv iia iib iih iii iva ivb ivi ivv v-a vaa vab vah vai vav vba vbh vbi vbv vh- vha vhb vhi vi- via vib vii viv vva vvb vvi vvv