-er -th ddd dde ddh ddl ddr dds ddt de- ded dee deh del der des det dh- dhd dhe dhh dhl dhr dhs dht dl- dld dle dlh dll dlr dls dlt drd dre drl drr drs drt dsd dse dsh dsl dsr dss dst dtd dte dth dtl dtr dts dtt ed- edd ede edh edl edr eds edt eed eee eel eer ees eet ehd ehe ehh ehl ehr ehs eht eld ele elh ell elr els elt erd ere erh erl err ers ert es- esd ese esh esl esr ess est etd ete eth etl etr ets ett hdd hde hdh hdl hdr hds hdt he- hed hee heh hel her hes het hhd hhe hhh hhl hhr hhs hht hld hle hlh hll hlr hls hlt hr- hrd hre hrh hrl hrr hrs hrt hsd hse hsh hsl hsr hss hst htd hte hth htl htr hts htt ldd lde ldh ldl ldr lds ldt led lee leh lel ler les let lhd lhh lhr lhs lht lld lle lll llr lls llt lrd lrh lrr lrs lrt lsd lse lsh lsl lsr lss lst ltd lte lth ltl ltr lts ltt rdd rde rdh rdl rdr rds rdt re- red ree reh rel rer res ret rh- rhd rhe rhh rhl rhr rhs rht rld rle rlh rll rlr rls rlt rrd rrh rrl rrr rrs rrt rsd rse rsh rsl rsr rss rst rtd rte rtl rtr rts rtt sdd sde sdh sdl sdr sds sdt se- sed see seh sel ser ses set sh- shd she shh shl shr shs sht sld sle slh sll slr sls slt sr- srd sre srh srl srr srs srt ss- ssd sse ssh ssl ssr sss sst std ste sth stl str sts stt tdd tde tdh tdl tdr tds tdt te- ted tee teh tel ter tes tet th- thd the thh thl thr ths tht tld tle tlh tll tlr tls tlt trd tre trh trl trr trs trt tsd tse tsh tsl tsr tss tst ttd tte tth ttl ttr tts ttt