pir pn- pna pnb pnc pne pnh pni pnn pno pnp pnr pny poa pob poc poe poh poi pon poo pop por poy ppa ppb ppc ppe pph ppi ppn ppo ppp ppr pra prb prc pre prh pri prn pro prp prr pry py- pya pyb pyc pye pyn pyo pyr ra- raa rab rac rae rah rai ran rao rap rar ray rba rbb rbc rbe rbh rbi rbn rbo rbp rbr rca rcb rcc rce rch rci rcn rco rcp rcr re- rea reb rec ree reh rei ren reo rep rer rey rh- rha rhb rhc rhe rhh rhi rhn rho rhp rhr ria rib ric rie rih rii rin rio rip rir riy rna rnb rnc rnh rni rnn rno rnp rnr rny roa rob roc roe roh roi ron roo rop ror roy rpa rpb rpc rpe rph rpi rpn rpo rpp rpr rra rrb rrc rrh rri rrn rrp rrr ry- rya ryc rye ryn ryo ryr ryy yaa yab yac yae yah yai yan yao yap yar yay ybc ybe ybi ybp ybr yby yca ycc yce ych yci yco ycp ycy yea yeb yec yee yeh yei yen yeo yep yer yey yha yhc yhe yhi yie yih yii yin yio yip yir yna yne ynn ynp yny yob yoc yoe yoi yon yoo yop yor yoy ypa ypo yra yrc yre yrn yro yrp yyb yyc yye yyy