-ey bbb bbc bbd bbe bbh bbk bbo bby bcb bcc bcd bce bch bck bco bcy bdb bdc bdd bde bdh bdk bdo bdy be- beb bec bed bee beh bek beo bey bhb bhc bhd bhe bhh bhk bho bkb bkc bke bkk bko bob boc bod boe boh bok boo boy by- byc byd bye byh byk byo c-- cbb cbc cbd cbe cbh cbk cbo cby ccb ccc ccd cce cch cck cco cdb cdc cdd cde cdh cdk cdo cdy ce- ceb cec ced cee ceh cek ceo cey ch- chb chc chd che chh chk cho chy ckb ckc ckd ckh cko cky co- cob coc cod coe coh cok coo coy cyb cyc cyd cye cyk cyo dbb dbc dbd dbe dbh dbk dbo dby dcb dcc dcd dce dck dco ddb ddc ddd dde ddh ddk ddo ddy de- deb dec ded dee deh dek deo dey dh- dhb dhc dhd dhe dhh dhk dho dkb dkc dke dkk dko dob doc dod doe doh dok doo doy dy- dyb dyc dyd dye dyk dyo dyy ebb ebc ebd ebe ebh ebk ebo eby ec- ecb ecc ecd ece ech eck eco ed- edb edc edd ede edh edk edo edy eeb eec eed eee eek eeo eey ehb ehc ehd ehe ehh eho ekb ekc ekd eke ekh eko eky eo- eob eoc eod eoe eoh eok eoo eyc eyd eye eyo hbb hbc hbd hbe hbh hbk hbo hby hcb hcc hcd hce hch hck hco hcy hdb hdc hdd hde hdh hdk hdo hdy he- heb hec hed hee heh hek heo hey hhb hhc hhd hhe hhh hhk hho hhy hkb hkd hkh hkk hko hob hoc hod hoe hoh hok hoo hoy hy- hyb hyc hyd hye hyh hyo hyy kbb kbc kbd kbe kbh kbk kbo kcb kcc kcd kce kch kck kdb kdc kde kdh kdk kdo kdy ke- keb kec ked kee keh kek keo key khe khh khk kho kkb kkc kke kkh kkk kky kob koc kod koe koh kok koo koy kyc kyd kye kyo ob- obb obc obd obe obh obk obo oby oc- ocb occ ocd och ock oco odb odc odd ode odh odo oeb oec oed oee oeh oeo oey ohc ohd ohe ohh oho okb okc okd oke okk oko oo- oob ooc ood ooh ook ooo oyd oye oyo ybc ybe yby ycc ycd yce ych yco ycy yde ydo ydy yeb yec yed yee yeh yek yeo yey yhc yhe ykk yob yoc yod yoe yok yoo yoy yyb yyc yye yyy