-er -ey bbb bbe bbh bbk bbo bbr bby be- beb bee beh bek beo ber bey bhb bhe bhh bhk bho bhr bkb bke bkk bko bkr bob boe boh bok boo bor boy brb bre brh brk bro brr bry by- bye byh byk byo byr ebb ebe ebh ebk ebo ebr eby eeb eee eek eeo eer eey ehb ehe ehh eho ehr ekb eke ekh eko ekr eky eo- eob eoe eoh eok eoo eor erb ere erh erk ero err ery eye eyo eyr hbb hbe hbh hbk hbo hbr hby he- heb hee heh hek heo her hey hhb hhe hhh hhk hho hhr hhy hkb hkh hkk hko hkr hob hoe hoh hok hoo hor hoy hr- hrb hre hrh hrk hro hrr hy- hyb hye hyh hyo hyr hyy kbb kbe kbh kbk kbo kbr ke- keb kee keh kek keo ker key khe khh khk kho khr kkb kke kkh kkk kkr kky kob koe koh kok koo kor koy krk kro krr kry kye kyo kyr ob- obb obe obh obk obo obr oby oeb oee oeh oeo oer oey ohe ohh oho ohr okb oke okk oko okr oo- oob ooh ook ooo oor or- orb ore orh ork oro orr ory oye oyo rbb rbe rbh rbk rbo rbr re- reb ree reh rek reo rer rey rh- rhb rhe rhh rho rhr rkb rke rkk rko rky rob roe roh rok roo ror roy rrb rrh rrk rrr ry- rye ryk ryo ryr ryy ybe ybr yby yeb yee yeh yek yeo yer yey yhe ykk yob yoe yok yoo yor yoy yre yro yyb yye yyy