ony oo- oob ooc oof oog ooi oom oon ooo oor or- orb orc ore orf org ori orm orn oro orr ory oye oyi oyo rbb rbc rbe rbf rbg rbi rbm rbn rbo rbr rcb rcc rce rcf rcg rci rcm rcn rco rcr re- reb rec ree ref reg rei rem ren reo rer rey rfb rfc rfe rff rfg rfi rfm rfn rfo rfr rgb rgc rge rgf rgg rgi rgn rgo rgr rib ric rie rif rig rii rim rin rio rir riy rmb rmc rme rmf rmg rmi rmm rmn rmo rmr rnb rnc rng rni rnm rnn rno rnr rny rob roc roe rof rog roi rom ron roo ror roy rrb rrc rrf rrg rri rrm rrn rrr ry- ryc rye ryf ryg rym ryn ryo ryr ryy ybc ybe ybf ybg ybi ybm ybr yby ycc yce ycf yci yco ycy yeb yec yee yef yeg yei yem yen yeo yer yey yfc yfe yff yfm yfr ygc ygm ygo yie yif yig yii yim yin yio yir ymc yme ymg ymi ymm ymo yne yng ynn yny yob yoc yoe yof yog yoi yom yon yoo yor yoy yrc yre yrf yrg yrn yro yyb yyc yye yyf yyg yyy