ona onb onc ong onh oni onl onn ono onr ony oo- ooa oob ooc oog ooh ooi ool oon ooo oor or- ora orb orc org orh ori orl orn oro orr ory oya oyi oyl oyo ra- raa rab rac rag rah rai ral ran rao rar ray rba rbb rbc rbg rbh rbi rbl rbn rbo rbr rca rcb rcc rcg rch rci rcl rcn rco rcr rga rgb rgc rgg rgh rgi rgn rgo rgr rh- rha rhb rhc rhg rhh rhi rhl rhn rho rhr ria rib ric rig rih rii ril rin rio rir riy rla rlc rlg rlh rli rll rln rlo rlr rly rna rnb rnc rng rnh rni rnn rno rnr rny roa rob roc rog roh roi rol ron roo ror roy rra rrb rrc rrg rrh rri rrl rrn rrr ry- rya ryc ryg ryn ryo ryr ryy yaa yab yac yag yah yai yal yan yao yar yay ybc ybg ybi ybl ybr yby yca ycc ych yci ycl yco ycy yga ygc ygl ygo yha yhc yhi yig yih yii yin yio yir ylc ylg yli yll ylr yly yna yng ynn yny yob yoc yog yoi yol yon yoo yor yoy yra yrc yrg yrn yro yyb yyc yyg yyy