a-a a-b a-i aaa aab aag aai aan aao aav ab- aba abb abg abi abn abo abv ag- aga agb agg agi agn ago agv ai- aia aib aig aii ain aio aiv an- ana anb ang ani ann ano anv aoa aob aog aoi aon aoo aov av- ava avb avg avi avn avo baa bab bag bai ban bao bav bba bbb bbg bbi bbn bbo bga bgb bgg bgi bgn bgo bgv bi- bia bib big bii bin bio biv bna bnb bng bni bnn bno bnv boa bob bog boi bon boo bov bva bvb bvg bvi bvn bvo bvv gaa gab gag gai gan gao gav gba gbg gbi gbn gbo gbv gga ggb ggg ggi ggn ggo ggv gia gib gig gii gin gio giv gna gnb gni gnn gno gnv goa gob gog goi gon goo gov gva gvb gvg gvi gvn gvo i-v ia- iaa iab iag iai ian iao iav iba ibb ibg ibi ibn ibo ibv iga igb igg igi ign igo iia iib iii iin iio in- ina inb ing ini inn ino inv io- ioa iob iog ioi ion ioo iov iva ivb ivg ivi ivo ivv n-i naa nab nag nai nan nao nav nba nbb nbg nbi nbn nbo nbv nga ngb ngg ngi ngn ngo nia nib nig nii nin nio niv nna nnb nng nni nnn nno nnv no- noa nob nog noi non noo nov nva nvb nvg nvi nvn nvv o-i oaa oab oag oai oan oao oav ob- oba obb obg obi obn obo obv oga ogg ogi ogn ogo oia oib oii oin oio oiv on- ona onb ong oni onn ono oo- ooa oob oog ooi oon ooo oov ov- ova ovb ovi ovo ovv v-a vaa vab vag vai van vao vav vba vbg vbi vbo vbv vga vgg vgn vgo vi- via vib vig vii vin vio viv vn- vna vng vni vno vnv voa vob vog voi von voo vov vva vvb vvg vvi vvo vvv