-up a-a a-b a-t aaa aab aae aap aat aau ab- aba abb abe abp abt abu aea aeb aee aep aet aeu ap- apa apb ape app apt apu at- ata atb ate atp att atu au- aua aub aue aup aut b-p b-u baa bab bae bap bat bau bba bbb bbe bbp bbt bbu be- bea beb bee bep bet beu bpa bpb bpe bpp bpt bpu bta btb bte btp btt btu bua bub bue bup but buu eaa eab eae eap eat eau eba ebb ebe ebp ebt ebu eea eeb eee eep eet ep- epa epb epe epp ept epu eta etb ete etp ett etu eu- eua eub eue eup eut p-p paa pab pae pap pat pau pba pbb pbe pbp pbt pbu pea peb pee pep pet peu ppa ppb ppe ppp ppt ppu pt- pta ptb pte ptp ptt ptu pua pub pue pup put puu taa tab tae tap tat tau tba tbb tbe tbp tbt tbu te- tea teb tee tep tet teu tpa tpb tpe tpp tpt tpu tta ttb tte ttp ttt ttu tua tub tue tup tut tuu ua- uaa uab uae uap uat uau uba ubb ube ubp ubt ubu uea ueb uee uep uet up- upa upb upe upp upt upu uta utb ute utp utt utu uua uue uut uuu