lll llr lls llt llu lrr lrs lrt lru lsl lsr lss lst lsu ltl ltr lts ltt ltu lul lur lus lut luu rll rlr rls rlt rlu rrl rrr rrs rrt rru rsl rsr rss rst rsu rtl rtr rts rtt rtu rur rus rut ruu sll slr sls slt slu sr- srl srr srs srt ss- ssl ssr sss sst ssu stl str sts stt stu sul sur sus sut suu tll tlr tls tlt tlu trl trr trs trt tru tsl tsr tss tst tsu ttl ttr tts ttt ttu tul tur tus tut tuu ull ulr uls ult ulu ur- url urr urs urt uru usl usr uss ust usu utl utr uts utt utu uur uus uut uuu