a-a a-b a-i aaa aab aag aai aan aar aav ab- aba abb abg abi abn abr abv ag- aga agb agg agi agn agr agv ai- aia aib aig aii ain air aiv an- ana anb ang ani ann anr anv ar- ara arb arg ari arn arr arv av- ava avb avg avi avn avr baa bab bag bai ban bar bav bba bbb bbg bbi bbn bbr bga bgb bgg bgi bgn bgr bgv bi- bia bib big bii bin bir biv bna bnb bng bni bnn bnr bnv bra brb brg bri brn brr brv bva bvb bvg bvi bvn bvr bvv gaa gab gag gai gan gar gav gba gbg gbi gbn gbr gbv gga ggb ggg ggi ggn ggr ggv gia gib gig gii gin gir giv gna gnb gni gnn gnr gnv gra grb grg gri grn grr grv gva gvb gvg gvi gvn gvr i-v ia- iaa iab iag iai ian iar iav iba ibb ibg ibi ibn ibr ibv iga igb igg igi ign igr iia iib iii iin iir in- ina inb ing ini inn inr inv ir- ira irb irg iri irn irr irv iva ivb ivg ivi ivr ivv n-i naa nab nag nai nan nar nav nba nbb nbg nbi nbn nbr nbv nga ngb ngg ngi ngn nia nib nig nii nin nir niv nna nnb nng nni nnn nnv nra nrb nrg nri nrn nrr nrv nva nvb nvg nvi nvn nvv ra- raa rab rag rai ran rar rav rba rbb rbg rbi rbn rbr rga rgb rgg rgi rgn rgr rgv ria rib rig rii rin rir riv rna rnb rng rni rnn rnr rnv rra rrb rrg rri rrn rrr rva rvb rvg rvi rvn rvr rvv v-a vaa vab vag vai van var vav vba vbg vbi vbr vbv vga vgg vgn vgr vi- via vib vig vii vin vir viv vn- vna vng vni vnr vnv vra vrb vrg vri vrn vrr vva vvb vvg vvi vvr vvv