rpa rpc rpd rpe rpi rpk rpn rpp rpr rps rra rrc rrd rri rrk rrn rrp rrr rrs rsa rsc rsd rse rsi rsk rsn rsp rsr rss ry- rya ryc ryd rye ryk ryn ryr rys ryy saa sac sad sae sai sak san sap sar sas say sca scc scd sce sci sck scn scp scr scs sda sdc sdd sde sdi sdk sdn sdp sdr sds sdy se- sea sec sed see sei sek sen sep ser ses sey sia sic sid sie sii sik sin sip sir sis sk- ska skc skd ske ski skk skp skr sks sky sna snc snd sne sni snk snn snp snr sns sny spa spc spd spe spi spk spn spp spr sps spy sr- sra src srd sre sri srk srn srp srr srs sry ss- ssa ssc ssd sse ssi ssk ssn ssp ssr sss sy- sya syc syd sye syi syk syn syp syr sys yaa yac yad yae yai yak yan yap yar yas yay yca ycc ycd yce yci ycp ycs ycy yda yde ydn yds ydy yea yec yed yee yei yek yen yep yer yes yey yid yie yii yin yip yir yis yka yki ykk ykn yna ynd yne ynk ynn ynp yns yny ypa ypd yps yra yrc yre yrn yrp yrs ysa ysc yse ysi ysk ysp ysr yss ysy yyc yye yys yyy