a-a a-c aaa aac aad aae aao aav ac- aca acc acd ace aco acv ad- ada adc add ade ado adv aea aec aed aee aeo aev aoa aoc aod aoe aoo aov av- ava avc avd ave avo c-- caa cac cad cae cao cav cca ccc ccd cce cco ccv cda cdc cdd cde cdo cdv ce- cea cec ced cee ceo cev co- coa coc cod coe coo cov cva cvc cvd cve cvo cvv daa dac dad dae dao dav dca dcc dcd dce dco dcv dda ddc ddd dde ddo de- dea dec ded dee deo dev doa doc dod doe doo dov dva dvc dvd dve eaa eac ead eae eao eav ec- eca ecc ecd ece eco ecv ed- eda edc edd ede edo eea eec eed eee eeo eev eo- eoa eoc eod eoe eoo eva evc evd eve evo evv oaa oac oad oae oao oav oc- oca occ ocd oco ocv oda odc odd ode odo odv oea oec oed oee oeo oo- ooa ooc ood ooo oov ov- ova ovc ovd ove ovo ovv v-a v-e vaa vac vad vae vao vav vca vcc vcd vce vco vdc vdd vde vdo vdv vea vec ved vee veo voa voc vod voe voo vov vva vvc vvo vvv