-up l-p lll llp llr lls llt llu lpl lpp lpr lps lpt lpu lrp lrr lrs lrt lru lsl lsp lsr lss lst lsu ltl ltp ltr lts ltt ltu lul lup lur lus lut luu p-p pll plp plr pls plt plu ppl ppp ppr pps ppt ppu prl prp prr prs prt pru ps- psl psp psr pss pst psu pt- ptl ptp ptr pts ptt ptu pul pup pur pus put puu rll rlp rlr rls rlt rlu rpl rpp rpr rps rpt rpu rrl rrp rrr rrs rrt rru rsl rsp rsr rss rst rsu rtl rtp rtr rts rtt rtu rup rur rus rut ruu sll slp slr sls slt slu spl spp spr sps spt spu sr- srl srp srr srs srt ss- ssl ssp ssr sss sst ssu stl stp str sts stt stu sul sup sur sus sut suu tll tlp tlr tls tlt tlu tpl tpp tpr tps tpt tpu trl trp trr trs trt tru tsl tsp tsr tss tst tsu ttl ttp ttr tts ttt ttu tul tup tur tus tut tuu ull ulp ulr uls ult ulu up- upp upr ups upt upu ur- url urp urr urs urt uru usl usp usr uss ust usu utl utp utr uts utt utu uur uus uut uuu