a-a a-b a-i aaa aab aae aag aai aan aav ab- aba abb abe abg abi abn abv aea aeb aee aeg aei aen aev ag- aga agb age agg agi agn agv ai- aia aib aie aig aii ain aiv an- ana anb ane ang ani ann anv av- ava avb ave avg avi avn baa bab bae bag bai ban bav bba bbb bbe bbg bbi bbn be- bea beb bee beg bei ben bev bga bgb bge bgg bgi bgn bgv bi- bia bib bie big bii bin biv bna bnb bne bng bni bnn bnv bva bvb bve bvg bvi bvn bvv eaa eab eae eag eai ean eav eba ebb ebe ebg ebi ebn ebv eea eeb eee eeg een eev ega egb ege egg egi egn eia eib eie eig eii ein eiv en- ena enb ene eng eni enn env eva evb eve evg evi evn evv gaa gab gae gag gai gan gav gba gbe gbg gbi gbn gbv ge- gea geb gee geg gei gen gev gga ggb ggg ggi ggn ggv gia gib gie gig gii gin giv gna gnb gne gni gnn gnv gva gvb gve gvg gvi gvn i-v ia- iaa iab iae iag iai ian iav iba ibb ibe ibg ibi ibn ibv ie- iea iee ieg iei ien iev iga igb ige igg igi ign iia iib iie iii iin in- ina inb ine ing ini inn inv iva ivb ive ivg ivi ivv n-i naa nab nae nag nai nan nav nba nbb nbe nbg nbi nbn nbv ne- nea neb nee neg nei nen nev nga ngb nge ngg ngi ngn nia nib nie nig nii nin niv nna nnb nne nng nni nnn nnv nva nvb nve nvg nvi nvn nvv v-a v-e vaa vab vae vag vai van vav vba vbg vbi vbv vea veb vee veg vei ven vga vgg vgn vi- via vib vie vig vii vin viv vn- vna vng vni vnv vva vvb vvg vvi vvv