-th a-a a-b a-c a-t aaa aab aac aae aah aat aau ab- aba abb abc abe abh abt abu ac- aca acb acc ace ach act acu aea aeb aec aee aeh aet aeu aha ahb ahc ahe ahh aht ahu at- ata atb atc ate ath att atu au- aua aub auc aue auh aut b-u baa bab bac bae bah bat bau bba bbb bbc bbe bbh bbt bbu bca bcb bcc bce bch bct bcu be- bea beb bec bee beh bet beu bha bhb bhc bhe bhh bht bhu bta btb btc bte bth btt btu bua bub buc bue buh but buu c-- caa cab cac cae cah cat cau cba cbb cbc cbe cbh cbt cbu cca ccb ccc cce cch cct ccu ce- cea ceb cec cee ceh cet ceu ch- cha chb chc che chh cht chu cta ctb ctc cte cth ctt ctu cua cub cuc cue cuh cut cuu eaa eab eac eae eah eat eau eba ebb ebc ebe ebh ebt ebu ec- eca ecb ecc ece ech ect ecu eea eeb eec eee eet eha ehb ehc ehe ehh eht ehu eta etb etc ete eth ett etu eu- eua eub euc eue eut haa hab hac hae hah hat hau hba hbb hbc hbe hbh hbt hbu hca hcb hcc hce hch hct he- hea heb hec hee heh het heu hha hhb hhc hhe hhh hht hhu hta htb htc hte hth htt hua hub huc hue huh hut huu taa tab tac tae tah tat tau tba tbb tbc tbe tbh tbt tbu tca tcb tcc tce tch tct tcu te- tea teb tec tee teh tet teu th- tha thb thc the thh tht thu tta ttb ttc tte tth ttt ttu tua tub tuc tue tuh tut tuu ua- uaa uab uac uae uah uat uau uba ubb ubc ube ubh ubt ubu uca ucb ucc uce uch uct ucu uea ueb uec uee ueh uet uha uhb uhc uhe uhh uht uhu uta utb utc ute uth utt utu uua uuc uue uut uuu