-ey a-a a-b aaa aab aae aam aao aas aay ab- aba abb abe abm abo abs aby aea aeb aee aem aeo aes aey ama amb ame amm amo ams amy aoa aob aoe aom aoo aos as- asa asb ase asm aso ass asy ay- aya aye ayo ays baa bab bae bam bao bas bay bba bbb bbe bbm bbo bbs bby be- bea beb bee bem beo bes bey bma bmb bme bmm bmo bms boa bob boe bom boo bos boy bsa bsb bse bsm bso bss bsy by- bya bye bym byo bys eaa eab eae eam eao eas eba ebb ebe ebm ebo ebs eby eea eeb eee eem eeo ees eey em- ema emb eme emm emo ems eo- eoa eob eoe eom eoo eos es- esa esb ese esm eso ess esy eya eye eym eyo eys m-o maa mab mae mam mao mas may mba mbb mbe mbm mbo mbs mea meb mee mem meo mes mey mma mmb mme mmm mmo mms moa mob moe mom moo mos moy msa msb mse msm mso mss msy my- mya myb mye mym myo mys oaa oab oae oam oao oas ob- oba obb obe obm obo obs oby oea oeb oee oem oeo oes oey om- oma omb ome omm omo oms omy oo- ooa oob oom ooo oos os- osa osb ose osm oso oss oya oye oyo oys saa sab sae sam sao sas say sba sbb sbe sbm sbo sbs sby se- sea seb see sem seo ses sey sma smb sme smm smo sms smy soa sob soe som soo sos soy ss- ssa ssb sse ssm sso sss sy- sya syb sye sym sys yaa yab yae yam yao yas yay ybe ybm ybs yby yea yeb yee yem yeo yes yey yma yme ymm ymo yms yob yoe yom yoo yos yoy ysa ysb yse ysm yso yss ysy yyb yye yys yyy