a-a a-b a-i aaa aab aad aae aai aav ab- aba abb abd abe abi abv ad- ada adb add ade adi adv aea aeb aed aee aei aev ai- aia aib aid aie aii aiv av- ava avb avd ave avi baa bab bad bae bai bav bba bbb bbd bbe bbi bda bdb bdd bde bdi bdv be- bea beb bed bee bei bev bi- bia bib bid bie bii biv bva bvb bvd bve bvi bvv daa dab dad dae dai dav dba dbb dbd dbe dbi dbv dda ddb ddd dde ddi de- dea deb ded dee dei dev di- dia dib did die dii div dva dvb dvd dve dvi eaa eab ead eae eai eav eba ebb ebd ebe ebi ebv ed- eda edb edd ede edi eea eeb eed eee eev eia eib eid eie eii eiv eva evb evd eve evi evv i-d i-v ia- iaa iab iad iae iai iav iba ibb ibd ibe ibi ibv ida idb idd ide idi idv ie- iea ied iee iei iev iia iib iid iie iii iva ivb ivd ive ivi ivv v-a v-e vaa vab vad vae vai vav vba vbd vbi vbv vdb vdd vde vdi vdv vea veb ved vee vei vi- via vib vid vie vii viv vva vvb vvi vvv