a-a a-b aaa aab aad aag aas aau ab- aba abb abd abg abs abu ad- ada adb add adg ads adu ag- aga agb agd agg ags agu as- asa asb asd asg ass asu au- aua aub aud aug aus b-u baa bab bad bag bas bau bba bbb bbd bbg bbs bbu bda bdb bdd bdg bds bdu bga bgb bgd bgg bgs bgu bsa bsb bsd bsg bss bsu bua bub bud bug bus buu daa dab dad dag das dau dba dbb dbd dbg dbs dbu dda ddb ddd ddg dds ddu dga dgd dgg dgs dgu dsa dsb dsd dsg dss dsu dua dub dud dug dus g-d gaa gab gad gag gas gau gba gbd gbg gbs gbu gda gdb gdd gds gdu gga ggb ggd ggg ggs ggu gsa gsb gsd gsg gss gsu gu- gua gub gud gug gus guu saa sab sad sag sas sau sba sbb sbd sbg sbs sbu sda sdb sdd sdg sds sdu sga sgb sgd sgg sgs sgu ss- ssa ssb ssd ssg sss ssu sua sub sud sug sus suu ua- uaa uab uad uag uas uau uba ubb ubg ubs ubu uda udb udd udg uds udu uga ugb ugg ugs ugu usa usb usd usg uss usu uua uug uus uuu