a-a a-b aaa aab aad aag aao aas aau ab- aba abb abd abg abo abs abu ad- ada adb add adg ado ads adu ag- aga agb agd agg ago ags agu aoa aob aod aog aoo aos aou as- asa asb asd asg aso ass asu au- aua aub aud aug auo aus b-u baa bab bad bag bao bas bau bba bbb bbd bbg bbo bbs bbu bda bdb bdd bdg bdo bds bdu bga bgb bgd bgg bgo bgs bgu boa bob bod bog boo bos bou bsa bsb bsd bsg bso bss bsu bua bub bud bug buo bus buu daa dab dad dag dao das dau dba dbb dbd dbg dbo dbs dbu dda ddb ddd ddg ddo dds ddu dga dgd dgg dgs dgu doa dob dod dog doo dos dou dsa dsb dsd dsg dso dss dsu dua dub dud dug duo dus g-d gaa gab gad gag gao gas gau gba gbd gbg gbo gbs gbu gda gdb gdd gdo gds gdu gga ggb ggd ggg ggo ggs ggu goa gob god gog goo gos gou gsa gsb gsd gsg gso gss gsu gu- gua gub gud gug guo gus guu oaa oab oad oag oao oas oau ob- oba obb obd obg obo obs obu oda odb odd odg odo ods odu oga ogd ogg ogo ogs oo- ooa oob ood oog ooo oos os- osa osb osd osg oso oss osu ou- oua oud ouo ous saa sab sad sag sao sas sau sba sbb sbd sbg sbo sbs sbu sda sdb sdd sdg sdo sds sdu sga sgb sgd sgg sgo sgs sgu soa sob sod sog soo sos sou ss- ssa ssb ssd ssg sso sss ssu sua sub sud sug suo sus suu ua- uaa uab uad uag uao uas uau uba ubb ubg ubo ubs ubu uda udb udd udg udo uds udu uga ugb ugg ugo ugs ugu uoa uob uod uog uoo uos usa usb usd usg uso uss usu uua uug uus uuu