a-a a-b a-t aaa aab aae aag aap aat ab- aba abb abe abg abp abt aea aeb aee aeg aep aet ag- aga agb age agg agp agt ap- apa apb ape apg app apt at- ata atb ate atg atp att b-p baa bab bae bag bap bat bba bbb bbe bbg bbp bbt be- bea beb bee beg bep bet bga bgb bge bgg bgp bgt bpa bpb bpe bpg bpp bpt bta btb bte btg btp btt eaa eab eae eag eap eat eba ebb ebe ebg ebp ebt eea eeb eee eeg eep eet ega egb ege egg egp egt ep- epa epb epe epg epp ept eta etb ete etg etp ett g-p gaa gab gae gag gap gat gba gbe gbg gbp gbt ge- gea geb gee geg gep get gga ggb ggg ggp ggt gpa gpb gpe gpg gpp gpt gta gtb gte gtg gtp gtt p-p paa pab pae pag pap pat pba pbb pbe pbg pbp pbt pea peb pee peg pep pet pga pgb pge pgg pgp pgt ppa ppb ppe ppg ppp ppt pt- pta ptb pte ptg ptp ptt taa tab tae tag tap tat tba tbb tbe tbg tbp tbt te- tea teb tee teg tep tet tga tgb tge tgg tgp tgt tpa tpb tpe tpg tpp tpt tta ttb tte ttg ttp ttt