poy ppb ppd ppe pph ppi ppm ppn ppo ppp ppr prb prd pre prh pri prm prn pro prp prr pry py- pyb pyd pye pym pyn pyo pyr rbb rbd rbe rbh rbi rbm rbn rbo rbp rbr rdb rdd rde rdh rdi rdm rdn rdo rdp rdr rdy re- reb red ree reh rei rem ren reo rep rer rey rh- rhb rhd rhe rhh rhi rhm rhn rho rhp rhr rib rid rie rih rii rim rin rio rip rir riy rmb rmd rme rmh rmi rmm rmn rmo rmp rmr rnb rnd rnh rni rnm rnn rno rnp rnr rny rob rod roe roh roi rom ron roo rop ror roy rpb rpd rpe rph rpi rpm rpn rpo rpp rpr rrb rrd rrh rri rrm rrn rrp rrr ry- ryd rye rym ryn ryo ryr ryy ybe ybi ybm ybp ybr yby yde ydn ydo ydy yeb yed yee yeh yei yem yen yeo yep yer yey yhe yhi yid yie yih yii yim yin yio yip yir yme ymi ymm ymo ynd yne ynn ynp yny yob yod yoe yoi yom yon yoo yop yor yoy ypd ypo yre yrn yro yrp yyb yye yyy