-ly l-p lll llp llr lls lly lpl lpp lpr lps lrp lrr lrs lry lsl lsp lsr lss lyl lyr lys p-p pll plp plr pls ply ppl ppp ppr pps prl prp prr prs pry ps- psl psp psr pss psy py- pyl pyr pys rll rlp rlr rls rly rpl rpp rpr rps rrl rrp rrr rrs rsl rsp rsr rss ry- ryr rys ryy sll slp slr sls sly spl spp spr sps spy sr- srl srp srr srs sry ss- ssl ssp ssr sss sy- syl syp syr sys yll ylr yls yly ypl yps yrp yrs ysl ysp ysr yss ysy yys yyy