a-a a-c aaa aac aah aao aav aay ac- aca acc ach aco acv acy aha ahc ahh aho ahv ahy aoa aoc aoh aoo aov av- ava avc avh avo avy ay- aya ayc ayh ayo c-- caa cac cah cao cav cay cca ccc cch cco ccv ch- cha chc chh cho chv chy co- coa coc coh coo cov coy cva cvc cvh cvo cvv cya cyc cyo haa hac hah hao hav hay hca hcc hch hco hcv hcy hha hhc hhh hho hhv hhy hoa hoc hoh hoo hov hoy hv- hva hvc hvo hvv hvy hy- hya hyc hyh hyo hyv hyy oaa oac oah oao oav oc- oca occ och oco ocv oha ohc ohh oho oo- ooa ooc ooh ooo oov ov- ova ovc ovh ovo ovv oya oyo v-a vaa vac vah vao vav vay vca vcc vch vco vcy vh- vha vhc vho voa voc voh voo vov voy vva vvc vvo vvv yaa yac yah yao yav yay yca ycc ych yco ycv ycy yha yhc yoc yoo yoy yva yvo yvy yyc yyy