a-a a-b a-t aaa aab aad aag aas aat aay ab- aba abb abd abg abs abt aby ad- ada adb add adg ads adt ady ag- aga agb agd agg ags agt agy as- asa asb asd asg ass ast asy at- ata atb atd atg ats att ay- aya ayd ays ayt baa bab bad bag bas bat bay bba bbb bbd bbg bbs bbt bby bda bdb bdd bdg bds bdt bdy bga bgb bgd bgg bgs bgt bsa bsb bsd bsg bss bst bsy bta btb btd btg bts btt bty by- bya byd byg bys byt daa dab dad dag das dat day dba dbb dbd dbg dbs dbt dby dda ddb ddd ddg dds ddt ddy dga dgd dgg dgs dgt dsa dsb dsd dsg dss dst dsy dta dtb dtd dtg dts dtt dty dy- dya dyb dyd dys dyy g-d gaa gab gad gag gas gat gay gba gbd gbg gbs gbt gby gda gdb gdd gds gdt gga ggb ggd ggg ggs ggt gsa gsb gsd gsg gss gst gta gtb gtd gtg gts gtt gty gy- gya gyb gyd gys saa sab sad sag sas sat say sba sbb sbd sbg sbs sbt sby sda sdb sdd sdg sds sdt sdy sga sgb sgd sgg sgs sgt ss- ssa ssb ssd ssg sss sst sta stb std stg sts stt sty sy- sya syb syd syg sys syt taa tab tad tag tas tat tay tba tbb tbd tbg tbs tbt tda tdb tdd tdg tds tdt tdy tga tgb tgg tgs tgt tgy tsa tsb tsd tsg tss tst tsy tta ttb ttd ttg tts ttt tty tya tyd tyg tys tyt yaa yab yad yag yas yat yay ybg ybs yby yda ydg yds ydt ydy yga ysa ysb ysg yss yst ysy yta ytd yts ytt yyb yyg yys yyt yyy