a-a a-b a-t aaa aab aad aag aas aat aau ab- aba abb abd abg abs abt abu ad- ada adb add adg ads adt adu ag- aga agb agd agg ags agt agu as- asa asb asd asg ass ast asu at- ata atb atd atg ats att atu au- aua aub aud aug aus aut b-u baa bab bad bag bas bat bau bba bbb bbd bbg bbs bbt bbu bda bdb bdd bdg bds bdt bdu bga bgb bgd bgg bgs bgt bgu bsa bsb bsd bsg bss bst bsu bta btb btd btg bts btt btu bua bub bud bug bus but buu daa dab dad dag das dat dau dba dbb dbd dbg dbs dbt dbu dda ddb ddd ddg dds ddt ddu dga dgd dgg dgs dgt dgu dsa dsb dsd dsg dss dst dsu dta dtb dtd dtg dts dtt dtu dua dub dud dug dus dut g-d gaa gab gad gag gas gat gau gba gbd gbg gbs gbt gbu gda gdb gdd gds gdt gdu gga ggb ggd ggg ggs ggt ggu gsa gsb gsd gsg gss gst gsu gta gtb gtd gtg gts gtt gtu gu- gua gub gud gug gus gut guu saa sab sad sag sas sat sau sba sbb sbd sbg sbs sbt sbu sda sdb sdd sdg sds sdt sdu sga sgb sgd sgg sgs sgt sgu ss- ssa ssb ssd ssg sss sst ssu sta stb std stg sts stt stu sua sub sud sug sus sut suu taa tab tad tag tas tat tau tba tbb tbd tbg tbs tbt tbu tda tdb tdd tdg tds tdt tdu tga tgb tgg tgs tgt tgu tsa tsb tsd tsg tss tst tsu tta ttb ttd ttg tts ttt ttu tua tub tud tug tus tut tuu ua- uaa uab uad uag uas uat uau uba ubb ubg ubs ubt ubu uda udb udd udg uds udt udu uga ugb ugg ugs ugt ugu usa usb usd usg uss ust usu uta utb utd uts utt utu uua uug uus uut uuu