pyr ra- raa rab rac rad rag rai rak ran rap rar ray rba rbb rbc rbd rbg rbi rbk rbn rbp rbr rca rcb rcc rcd rcg rci rcn rcp rcr rda rdb rdc rdd rdg rdi rdn rdp rdr rdy rga rgb rgc rgd rgg rgi rgk rgn rgp rgr ria rib ric rid rig rii rik rin rip rir riy rkb rkc rkg rkk rkp rky rna rnb rnc rnd rng rni rnn rnp rnr rny rpa rpb rpc rpd rpg rpi rpk rpn rpp rpr rra rrb rrc rrd rrg rri rrk rrn rrp rrr ry- rya ryc ryd ryg ryk ryn ryr ryy yaa yab yac yad yag yai yak yan yap yar yay ybc ybg ybi ybp ybr yby yca ycc ycd yci ycp ycy yda ydg ydn ydy yga ygc yid yig yii yin yip yir yka yki ykk ykn yna ynd yng ynk ynn ynp yny ypa ypd ypg yra yrc yrg yrn yrp yyb yyc yyg yyy