-al -ol a-a a-b aaa aab aae aaf aal aao aau aav ab- aba abb abe abf abl abo abu abv aea aeb aee aef ael aeo aeu aev af- afa afb afe aff afl afo afu afv al- ala alb ale alf all alo alu alv aoa aob aoe aof aol aoo aou aov au- aua aub aue auf aul auo auv av- ava avb ave avf avl avo avu b-u baa bab bae baf bal bao bau bav bba bbb bbe bbf bbl bbo bbu be- bea beb bee bef bel beo beu bev bfa bfb bfe bff bfl bfo bfu bfv bla blb ble blf bll blo blu blv boa bob boe bof bol boo bou bov bua bub bue buf bul buo buu bva bvb bve bvl bvo bvu bvv eaa eab eae eaf eal eao eau eav eba ebb ebe ebf ebl ebo ebu ebv eea eeb eee eef eel eeo eev ef- efa efb efe eff efl efo ela elb ele elf ell elo elu elv eo- eoa eob eoe eof eol eoo eou eu- eua eub eue euf eul euv eva evb eve evf evl evo evv faa fab fae faf fal fao fau fav fba fbb fbe fbf fbl fbo fbu fea feb fee fef fel feo feu fev ffa ffe fff ffl ffo ffu ffv fla flb fle flf fll flo flu foa fob foe fof fol foo fou fua fub fue fuf ful fuo fuu fuv fva la- laa lab lae laf lal lao lau lav lba lbb lbe lbf lbl lbo lbu lbv lea leb lee lef lel leo leu lev lfa lfb lfe lff lfl lfo lfu lla llb lle llf lll llo llu llv loa lob loe lof lol loo lou lov lua lub lue luf lul luo luu luv lva lvb lve lvf lvl lvv oaa oab oae oaf oal oao oau oav ob- oba obb obe obf obl obo obu obv oea oeb oee oef oel oeo of- ofa ofb ofe off ofl ofo ofu ofv ola olb ole olf oll olo olu oo- ooa oob oof ool ooo oov ou- oua oue ouf oul ouo ov- ova ovb ove ovf ovl ovo ovv ua- uaa uab uae uaf ual uao uau uav uba ubb ube ubf ubl ubo ubu ubv uea ueb uee uef uel ufa ufe uff ufl ufo ufu ufv ula ulb ule ulf ull ulo ulu ulv uoa uob uoe uol uoo uua uue uuu uva uvb uve uvf uvl uvo uvu uvv v-a v-e vaa vab vae val vao vau vav vba vbl vbo vbv vea veb vee vef vel veo veu vfa vfb vff vfl vfu vfv vl- vla vlb vle vlf vll vlo vlv voa vob voe vof vol voo vou vov vue vul vuv vva vvb vvo vvv