a-a a-b a-t aaa aab aae aag aak aap aat ab- aba abb abe abg abk abp abt aea aeb aee aeg aek aep aet ag- aga agb age agg agk agp agt aka akb ake akg akk akp ap- apa apb ape apg apk app apt at- ata atb ate atg atp att b-p baa bab bae bag bak bap bat bba bbb bbe bbg bbk bbp bbt be- bea beb bee beg bek bep bet bga bgb bge bgg bgk bgp bgt bka bkb bke bkg bkk bkp bkt bpa bpb bpe bpg bpp bpt bta btb bte btg btk btp btt eaa eab eae eag eak eap eat eba ebb ebe ebg ebk ebp ebt eea eeb eee eeg eek eep eet ega egb ege egg egp egt eka ekb eke ekg ekp ekt ep- epa epb epe epg epp ept eta etb ete etg etk etp ett g-p gaa gab gae gag gak gap gat gba gbe gbg gbk gbp gbt ge- gea geb gee geg gek gep get gga ggb ggg ggp ggt gka gkb gkp gkt gpa gpb gpe gpg gpk gpp gpt gta gtb gte gtg gtk gtp gtt k-t ka- kaa kab kae kag kak kap kat kba kbb kbe kbk kbp ke- kea keb kee keg kek kep ket kga kgb kgp kkb kke kkk kkp kkt kpa kpe kpk kpp kpt kta ktb kte ktg ktk ktp ktt p-p paa pab pae pag pak pap pat pba pbb pbe pbg pbk pbp pbt pea peb pee peg pek pep pet pga pgb pge pgg pgk pgp pgt pka pkb pke pkg pkp pkt ppa ppb ppe ppg ppk ppp ppt pt- pta ptb pte ptg ptk ptp ptt taa tab tae tag tak tap tat tba tbb tbe tbg tbk tbp tbt te- tea teb tee teg tek tep tet tga tgb tge tgg tgk tgp tgt tka tkb tke tkg tkk tkp tkt tpa tpb tpe tpg tpk tpp tpt tta ttb tte ttg ttk ttp ttt