pre prg pri prk prp prr pry py- pya pyb pyc pyd pye pyg pyk pyr ra- raa rab rac rad rae rag rai rak rap rar ray rba rbb rbc rbd rbe rbg rbi rbk rbp rbr rca rcb rcc rcd rce rcg rci rcp rcr rda rdb rdc rdd rde rdg rdi rdp rdr rdy re- rea reb rec red ree reg rei rek rep rer rey rga rgb rgc rgd rge rgg rgi rgk rgp rgr ria rib ric rid rie rig rii rik rip rir riy rkb rkc rke rkg rkk rkp rky rpa rpb rpc rpd rpe rpg rpi rpk rpp rpr rra rrb rrc rrd rrg rri rrk rrp rrr ry- rya ryc ryd rye ryg ryk ryr ryy yaa yab yac yad yae yag yai yak yap yar yay ybc ybe ybg ybi ybp ybr yby yca ycc ycd yce yci ycp ycy yda yde ydg ydy yea yeb yec yed yee yeg yei yek yep yer yey yga ygc yid yie yig yii yip yir yka yki ykk ypa ypd ypg yra yrc yre yrg yrp yyb yyc yye yyg yyy