a-a a-b aaa aab aad aag aao aas aay ab- aba abb abd abg abo abs aby ad- ada adb add adg ado ads ady ag- aga agb agd agg ago ags agy aoa aob aod aog aoo aos as- asa asb asd asg aso ass asy ay- aya ayd ayo ays baa bab bad bag bao bas bay bba bbb bbd bbg bbo bbs bby bda bdb bdd bdg bdo bds bdy bga bgb bgd bgg bgo bgs boa bob bod bog boo bos boy bsa bsb bsd bsg bso bss bsy by- bya byd byg byo bys daa dab dad dag dao das day dba dbb dbd dbg dbo dbs dby dda ddb ddd ddg ddo dds ddy dga dgd dgg dgs doa dob dod dog doo dos doy dsa dsb dsd dsg dso dss dsy dy- dya dyb dyd dyo dys dyy g-d gaa gab gad gag gao gas gay gba gbd gbg gbo gbs gby gda gdb gdd gdo gds gga ggb ggd ggg ggo ggs goa gob god gog goo gos goy gsa gsb gsd gsg gso gss gy- gya gyb gyd gyo gys oaa oab oad oag oao oas ob- oba obb obd obg obo obs oby oda odb odd odg odo ods oga ogd ogg ogo ogs ogy oo- ooa oob ood oog ooo oos os- osa osb osd osg oso oss oya oyd oyo oys saa sab sad sag sao sas say sba sbb sbd sbg sbo sbs sby sda sdb sdd sdg sdo sds sdy sga sgb sgd sgg sgo sgs soa sob sod sog soo sos soy ss- ssa ssb ssd ssg sso sss sy- sya syb syd syg sys yaa yab yad yag yao yas yay ybg ybs yby yda ydg ydo yds ydy yga ygo yob yod yog yoo yos yoy ysa ysb ysg yso yss ysy yyb yyg yys yyy