a-a a-b a-t aaa aab aag aak aan aao aat aau ab- aba abb abg abk abn abo abt abu ag- aga agb agg agk agn ago agt agu aka akb akg akk akn ako aku an- ana anb ang ank ann ano ant anu aoa aob aog aok aon aoo aot aou at- ata atb atg atn ato att atu au- aua aub aug auk aun auo aut b-u baa bab bag bak ban bao bat bau bba bbb bbg bbk bbn bbo bbt bbu bga bgb bgg bgk bgn bgo bgt bgu bka bkb bkg bkk bkn bko bkt bna bnb bng bnk bnn bno bnt bnu boa bob bog bok bon boo bot bou bta btb btg btk btn bto btt btu bua bub bug buk bun buo but buu gaa gab gag gak gan gao gat gau gba gbg gbk gbn gbo gbt gbu gga ggb ggg ggn ggo ggt ggu gka gkb gkn gko gkt gna gnb gnn gno gnt gnu goa gob gog gok gon goo got gou gta gtb gtg gtk gtn gto gtt gtu gu- gua gub gug guk gun guo gut guu k-t ka- kaa kab kag kak kan kao kat kau kba kbb kbk kbn kbo kbu kga kgb kgo kgu kkb kkk kkn kkt kku kn- kna kng knk knn kno knt knu koa kob kog kok kon koo kot kou kta ktb ktg ktk ktn kto ktt ktu kub kug kuk kun kut kuu naa nab nag nak nan nao nat nau nba nbb nbg nbk nbn nbo nbt nbu nga ngb ngg ngk ngn ngo ngt ngu nka nkk nkn nko nkt nku nna nnb nng nnk nnn nno nnt nnu no- noa nob nog nok non noo not nou nta ntb ntg ntk ntn nto ntt ntu nua nub nug nuk nun nuo nut nuu oaa oab oag oak oan oao oat oau ob- oba obb obg obk obn obo obt obu oga ogg ogn ogo ogt oka okb okg okk oko oku on- ona onb ong onk onn ono ont onu oo- ooa oob oog ook oon ooo oot ot- ota otb otg otk otn oto ott otu ou- oua ouk oun ouo out taa tab tag tak tan tao tat tau tba tbb tbg tbk tbn tbo tbt tbu tga tgb tgg tgk tgn tgo tgt tgu tka tkb tkg tkk tko tkt tna tnb tng tnk tnn tno tnt to- toa tob tog tok ton too tot tou tta ttb ttg ttk ttn tto ttt ttu tua tub tug tuk tun tuo tut tuu ua- uaa uab uag uak uan uao uat uau uba ubb ubg ubk ubn ubo ubt ubu uga ugb ugg ugk ugn ugo ugt ugu uka ukb ukk ukn uku un- una unb ung unk unn uno unt unu uoa uob uog uok uon uoo uot uta utb utk utn uto utt utu uua uug uun uut uuu