a-a a-b aaa aab aad aam aao aas aay ab- aba abb abd abm abo abs aby ad- ada adb add adm ado ads ady ama amb amd amm amo ams amy aoa aob aod aom aoo aos as- asa asb asd asm aso ass asy ay- aya ayd ayo ays baa bab bad bam bao bas bay bba bbb bbd bbm bbo bbs bby bda bdb bdd bdm bdo bds bdy bma bmb bmd bmm bmo bms boa bob bod bom boo bos boy bsa bsb bsd bsm bso bss bsy by- bya byd bym byo bys daa dab dad dam dao das day dba dbb dbd dbm dbo dbs dby dda ddb ddd ddm ddo dds ddy dma dmb dmd dmm dmo dms doa dob dod dom doo dos doy dsa dsb dsd dsm dso dss dsy dy- dya dyb dyd dym dyo dys dyy m-o maa mab mad mam mao mas may mba mbb mbd mbm mbo mbs mda mdb mdd mdm mdo mds mdy mma mmb mmd mmm mmo mms moa mob mod mom moo mos moy msa msb msd msm mso mss msy my- mya myb myd mym myo mys oaa oab oad oam oao oas ob- oba obb obd obm obo obs oby oda odb odd odm odo ods om- oma omb omd omm omo oms omy oo- ooa oob ood oom ooo oos os- osa osb osd osm oso oss oya oyd oyo oys saa sab sad sam sao sas say sba sbb sbd sbm sbo sbs sby sda sdb sdd sdm sdo sds sdy sma smb smd smm smo sms smy soa sob sod som soo sos soy ss- ssa ssb ssd ssm sso sss sy- sya syb syd sym sys yaa yab yad yam yao yas yay ybm ybs yby yda ydo yds ydy yma ymm ymo yms yob yod yom yoo yos yoy ysa ysb ysm yso yss ysy yyb yys yyy