a-a a-b a-i aaa aab aag aai aak aan aao aar aav ab- aba abb abg abi abk abn abo abr abv ag- aga agb agg agi agk agn ago agr agv ai- aia aib aig aii aik ain aio air aiv aka akb akg aki akk akn ako akr akv an- ana anb ang ani ank ann ano anr anv aoa aob aog aoi aok aon aoo aor aov ar- ara arb arg ari ark arn aro arr arv av- ava avb avg avi avk avn avo avr baa bab bag bai bak ban bao bar bav bba bbb bbg bbi bbk bbn bbo bbr bga bgb bgg bgi bgk bgn bgo bgr bgv bi- bia bib big bii bik bin bio bir biv bka bkb bkg bkk bkn bko bkr bkv bna bnb bng bni bnk bnn bno bnr bnv boa bob bog boi bok bon boo bor bov bra brb brg bri brk brn bro brr brv bva bvb bvg bvi bvk bvn bvo bvr bvv gaa gab gag gai gak gan gao gar gav gba gbg gbi gbk gbn gbo gbr gbv gga ggb ggg ggi ggn ggo ggr ggv gia gib gig gii gik gin gio gir giv gka gkb gkn gko gna gnb gni gnn gno gnr gnv goa gob gog goi gok gon goo gor gov gra grb grg gri grk grn gro grr grv gva gvb gvg gvi gvk gvn gvo gvr i-v ia- iaa iab iag iai ian iao iar iav iba ibb ibg ibi ibk ibn ibo ibr ibv iga igb igg igi igk ign igo igr iia iib iii iin iio iir ika ikb iki ikk iko ikr ikv in- ina inb ing ini ink inn ino inr inv io- ioa iob iog ioi ion ioo ior iov ir- ira irb irg iri irk irn iro irr irv iva ivb ivg ivi ivo ivr ivv ka- kaa kab kag kai kak kan kao kar kav kba kbb kbi kbk kbn kbo kbr kga kgb kgi kgo kgv kia kib kig kii kik kin kio kir kiv kkb kki kkk kkn kkr kkv kn- kna kng kni knk knn kno knr koa kob kog koi kok kon koo kor kra krg kri krk krn kro krr krv kva kvb kvi kvk kvn kvo kvr kvv n-i naa nab nag nai nak nan nao nar nav nba nbb nbg nbi nbk nbn nbo nbr nbv nga ngb ngg ngi ngk ngn ngo nia nib nig nii nik nin nio nir niv nka nki nkk nkn nko nkr nna nnb nng nni nnk nnn nno nnv no- noa nob nog noi nok non noo nor nov nra nrb nrg nri nrk nrn nro nrr nrv nva nvb nvg nvi nvk nvn nvv o-i oaa oab oag oai oak oan oao oar oav ob- oba obb obg obi obk obn obo obr obv oga ogg ogi ogn ogo oia oib oii oik oin oio oir oiv oka okb okg oki okk oko okr on- ona onb ong oni onk onn ono onr oo- ooa oob oog ooi ook oon ooo oor oov or- ora orb org ori ork orn oro orr orv ov- ova ovb ovi ovo ovv ra- raa rab rag rai rak ran rao rar rav rba rbb rbg rbi rbk rbn rbo rbr rga rgb rgg rgi rgk rgn rgo rgr rgv ria rib rig rii rik rin rio rir riv rkb rkg rkk rko rkv rna rnb rng rni rnn rno rnr rnv roa rob rog roi rok ron roo ror rov rra rrb rrg rri rrk rrn rrr rva rvb rvg rvi rvn rvo rvr rvv v-a vaa vab vag vai vak van vao var vav vba vbg vbi vbk vbo vbr vbv vga vgg vgn vgo vgr vi- via vib vig vii vik vin vio vir viv vka vkb vkg vn- vna vng vni vno vnr vnv voa vob vog voi vok von voo vor vov vra vrb vrg vri vrk vrn vrr vva vvb vvg vvi vvo vvr vvv