a-a a-b aaa aab aad aam aao aay ab- aba abb abd abm abo aby ad- ada adb add adm ado ady ama amb amd amm amo amy aoa aob aod aom aoo ay- aya ayd ayo baa bab bad bam bao bay bba bbb bbd bbm bbo bby bda bdb bdd bdm bdo bdy bma bmb bmd bmm bmo boa bob bod bom boo boy by- bya byd bym byo daa dab dad dam dao day dba dbb dbd dbm dbo dby dda ddb ddd ddm ddo ddy dma dmb dmd dmm dmo doa dob dod dom doo doy dy- dya dyb dyd dym dyo dyy m-o maa mab mad mam mao may mba mbb mbd mbm mbo mda mdb mdd mdm mdo mdy mma mmb mmd mmm mmo moa mob mod mom moo moy my- mya myb myd mym myo oaa oab oad oam oao ob- oba obb obd obm obo oby oda odb odd odm odo om- oma omb omd omm omo omy oo- ooa oob ood oom ooo oya oyd oyo yaa yab yad yam yao yay ybm yby yda ydo ydy yma ymm ymo yob yod yom yoo yoy yyb yyy