-th hhh hhl hhr hhs hht hlh hll hlr hls hlt hr- hrh hrl hrr hrs hrt hsh hsl hsr hss hst hth htl htr hts htt lhh lhr lhs lht lll llr lls llt lrh lrr lrs lrt lsh lsl lsr lss lst lth ltl ltr lts ltt rh- rhh rhl rhr rhs rht rlh rll rlr rls rlt rrh rrl rrr rrs rrt rsh rsl rsr rss rst rtl rtr rts rtt sh- shh shl shr shs sht slh sll slr sls slt sr- srh srl srr srs srt ss- ssh ssl ssr sss sst sth stl str sts stt th- thh thl thr ths tht tlh tll tlr tls tlt trh trl trr trs trt tsh tsl tsr tss tst tth ttl ttr tts ttt