a-a a-c aaa aac aad aah aao aav ac- aca acc acd ach aco acv ad- ada adc add adh ado adv aha ahc ahd ahh aho ahv aoa aoc aod aoh aoo aov av- ava avc avd avh avo c-- caa cac cad cah cao cav cca ccc ccd cch cco ccv cda cdc cdd cdh cdo cdv ch- cha chc chd chh cho chv co- coa coc cod coh coo cov cva cvc cvd cvh cvo cvv daa dac dad dah dao dav dca dcc dcd dco dcv dda ddc ddd ddh ddo dh- dha dhc dhd dhh dho doa doc dod doh doo dov dva dvc dvd dvh haa hac had hah hao hav hca hcc hcd hch hco hcv hda hdc hdd hdh hdo hdv hha hhc hhd hhh hho hhv hoa hoc hod hoh hoo hov hv- hva hvc hvd hvo hvv oaa oac oad oah oao oav oc- oca occ ocd och oco ocv oda odc odd odh odo odv oha ohc ohd ohh oho oo- ooa ooc ood ooh ooo oov ov- ova ovc ovd ovh ovo ovv v-a vaa vac vad vah vao vav vca vcc vcd vch vco vdc vdd vdh vdo vdv vh- vha vhc vhd vho voa voc vod voh voo vov vva vvc vvo vvv