a-a a-b aaa aab aam aan aao aar aau aav ab- aba abb abm abn abo abr abu abv ama amb amm amn amo amr amu amv an- ana anb anm ann ano anr anu anv aoa aob aom aon aoo aor aou aov ar- ara arb arm arn aro arr aru arv au- aua aub aum aun auo aur auv av- ava avb avm avn avo avr avu b-u baa bab bam ban bao bar bau bav bba bbb bbm bbn bbo bbr bbu bma bmb bmm bmn bmo bmr bmu bmv bna bnb bnn bno bnr bnu bnv boa bob bom bon boo bor bou bov bra brb brm brn bro brr bru brv bua bub bum bun buo bur buu bva bvb bvm bvn bvo bvr bvu bvv m-o m-r m-v maa mab mam man mao mar mau mav mba mbb mbm mbo mbr mbu mbv mma mmb mmm mmn mmo mmr mmu mmv mna mnb mnm mnn mno mnr mnu moa mob mom mon moo mor mou mov mra mrb mrm mrn mro mrr mru mrv mua mub mum mun mur muu mva mvb mvm mvn mvo mvr mvv naa nab nam nan nao nar nau nav nba nbb nbm nbn nbo nbr nbu nbv nma nmb nmm nmn nmo nmr nmu nna nnb nnm nnn nno nnu nnv no- noa nob nom non noo nor nou nov nra nrb nrm nrn nro nrr nru nrv nua nub num nun nuo nur nuu nuv nva nvb nvm nvn nvu nvv oaa oab oam oan oao oar oau oav ob- oba obb obm obn obo obr obu obv om- oma omb omm omn omo omr omu omv on- ona onb onn ono onr onu oo- ooa oob oom oon ooo oor oov or- ora orb orm orn oro orr oru orv ou- oua oum oun ouo our ov- ova ovb ovo ovv ra- raa rab ram ran rao rar rau rav rba rbb rbm rbn rbo rbr rbu rma rmb rmm rmn rmo rmr rmv rna rnb rnm rnn rno rnr rnu rnv roa rob rom ron roo ror rou rov rra rrb rrm rrn rrr rru rua rub rum run ruo rur ruu ruv rva rvb rvm rvn rvo rvr rvu rvv ua- uaa uab uam uan uao uar uau uav uba ubb ubn ubo ubr ubu ubv um- uma umb umm umn umo umr umu un- una unb unm unn uno unr unu unv uoa uob uom uon uoo uor ur- ura urb urm urn uro urr uru uua uum uun uur uuu uva uvb uvm uvo uvu uvv v-a vaa vab vam van vao var vau vav vba vbm vbo vbr vbv vm- vma vmm vmn vmo vmr vmu vn- vna vnm vno vnr vnu vnv voa vob vom von voo vor vou vov vra vrb vrm vrn vrr vru vum vur vuv vva vvb vvm vvo vvr vvv