a-a a-c aaa aac aad aae aav ac- aca acc acd ace acv ad- ada adc add ade adv aea aec aed aee aev av- ava avc avd ave c-- caa cac cad cae cav cca ccc ccd cce ccv cda cdc cdd cde cdv ce- cea cec ced cee cev cva cvc cvd cve cvv daa dac dad dae dav dca dcc dcd dce dcv dda ddc ddd dde de- dea dec ded dee dev dva dvc dvd dve eaa eac ead eae eav ec- eca ecc ecd ece ecv ed- eda edc edd ede eea eec eed eee eev eva evc evd eve evv v-a v-e vaa vac vad vae vav vca vcc vcd vce vdc vdd vde vdv vea vec ved vee vva vvc vvv