-th a-a a-b a-c a-t aaa aab aac aae aah aan aat aau ab- aba abb abc abe abh abn abt abu ac- aca acb acc ace ach acn act acu aea aeb aec aee aeh aen aet aeu aha ahb ahc ahe ahh ahn aht ahu an- ana anb anc ane anh ann ant anu at- ata atb atc ate ath atn att atu au- aua aub auc aue auh aun aut b-u baa bab bac bae bah ban bat bau bba bbb bbc bbe bbh bbn bbt bbu bca bcb bcc bce bch bcn bct bcu be- bea beb bec bee beh ben bet beu bha bhb bhc bhe bhh bht bhu bna bnb bnc bne bnn bnt bnu bta btb btc bte bth btn btt btu bua bub buc bue buh bun but buu c-- caa cab cac cae cah can cat cau cba cbb cbc cbe cbh cbn cbt cbu cca ccb ccc cce cch ccn cct ccu ce- cea ceb cec cee ceh cen cet ceu ch- cha chb chc che chh chn cht chu cn- cna cnb cnc cne cnh cnn cnt cnu cta ctb ctc cte cth ctn ctt ctu cua cub cuc cue cuh cun cut cuu eaa eab eac eae eah ean eat eau eba ebb ebc ebe ebh ebn ebt ebu ec- eca ecb ecc ece ech ecn ect ecu eea eeb eec eee een eet eha ehb ehc ehe ehh ehn eht ehu en- ena enb enc ene enh enn ent enu eta etb etc ete eth etn ett etu eu- eua eub euc eue eun eut haa hab hac hae hah han hat hau hba hbb hbc hbe hbh hbn hbt hbu hca hcb hcc hce hch hcn hct he- hea heb hec hee heh hen het heu hha hhb hhc hhe hhh hhn hht hhu hna hnb hnc hne hnh hnn hnt hnu hta htb htc hte hth htn htt hua hub huc hue huh hun hut huu naa nab nac nae nah nan nat nau nba nbb nbc nbe nbn nbt nbu nca ncb ncc nce nch ncn nct ncu ne- nea neb nec nee neh nen net neu nha nhb nhc nhe nhh nhn nht nhu nna nnb nnc nne nnh nnn nnt nnu nta ntb ntc nte nth ntn ntt ntu nua nub nuc nue nuh nun nut nuu taa tab tac tae tah tan tat tau tba tbb tbc tbe tbh tbn tbt tbu tca tcb tcc tce tch tcn tct tcu te- tea teb tec tee teh ten tet teu th- tha thb thc the thh thn tht thu tna tnb tnc tne tnh tnn tnt tta ttb ttc tte tth ttn ttt ttu tua tub tuc tue tuh tun tut tuu ua- uaa uab uac uae uah uan uat uau uba ubb ubc ube ubh ubn ubt ubu uca ucb ucc uce uch ucn uct ucu uea ueb uec uee ueh uen uet uha uhb uhc uhe uhh uht uhu un- una unb unc une unh unn unt unu uta utb utc ute uth utn utt utu uua uuc uue uun uut uuu