-th a-a a-b a-t aaa aab aah aan aao aat aau ab- aba abb abh abn abo abt abu aha ahb ahh ahn aho aht ahu an- ana anb anh ann ano ant anu aoa aob aoh aon aoo aot aou at- ata atb ath atn ato att atu au- aua aub auh aun auo aut b-u baa bab bah ban bao bat bau bba bbb bbh bbn bbo bbt bbu bha bhb bhh bho bht bhu bna bnb bnn bno bnt bnu boa bob boh bon boo bot bou bta btb bth btn bto btt btu bua bub buh bun buo but buu haa hab hah han hao hat hau hba hbb hbh hbn hbo hbt hbu hha hhb hhh hhn hho hht hhu hna hnb hnh hnn hno hnt hnu hoa hob hoh hon hoo hot hou hta htb hth htn hto htt hua hub huh hun huo hut huu naa nab nah nan nao nat nau nba nbb nbn nbo nbt nbu nha nhb nhh nhn nht nhu nna nnb nnh nnn nno nnt nnu no- noa nob noh non noo not nou nta ntb nth ntn nto ntt ntu nua nub nuh nun nuo nut nuu oaa oab oah oan oao oat oau ob- oba obb obh obn obo obt obu oha ohh ohn oho oht ohu on- ona onb onh onn ono ont onu oo- ooa oob ooh oon ooo oot ot- ota otb oth otn oto ott otu ou- oua ouh oun ouo out taa tab tah tan tao tat tau tba tbb tbh tbn tbo tbt tbu th- tha thb thh thn tho tht thu tna tnb tnh tnn tno tnt to- toa tob toh ton too tot tou tta ttb tth ttn tto ttt ttu tua tub tuh tun tuo tut tuu ua- uaa uab uah uan uao uat uau uba ubb ubh ubn ubo ubt ubu uha uhb uhh uho uht uhu un- una unb unh unn uno unt unu uoa uob uon uoo uot uta utb uth utn uto utt utu uua uun uut uuu