rds rdt re- red ree rei rel rem ren reo rep rer res ret rid rie rii ril rim rin rio rip rir ris rit rld rle rli rll rlm rln rlo rlp rlr rls rlt rmd rme rmi rml rmm rmn rmo rmp rmr rms rmt rnd rni rnm rnn rno rnp rnr rns rnt rod roe roi rol rom ron roo rop ror ros rot rpd rpe rpi rpl rpm rpn rpo rpp rpr rps rpt rrd rri rrl rrm rrn rrp rrr rrs rrt rsd rse rsi rsl rsm rsn rso rsp rsr rss rst rtd rte rti rtl rtm rtn rto rtp rtr rts rtt sdd sde sdi sdl sdm sdn sdo sdp sdr sds sdt se- sed see sei sel sem sen seo sep ser ses set sid sie sii sil sim sin sio sip sir sis sit sld sle sli sll slm sln slo slp slr sls slt smd sme smi sml smm smn smo smp smr sms smt snd sne sni snl snm snn sno snp snr sns snt sod soe soi sol som son soo sop sor sos sot spd spe spi spl spm spn spo spp spr sps spt sr- srd sre sri srl srm srn sro srp srr srs srt ss- ssd sse ssi ssl ssm ssn sso ssp ssr sss sst std ste sti stl stm stn sto stp str sts stt tdd tde tdi tdl tdm tdn tdo tdp tdr tds tdt te- ted tee tei tel tem ten teo tep ter tes tet tid tie tii til tim tin tio tip tir tis tit tld tle tli tll tlm tln tlo tlp tlr tls tlt tmd tme tmi tml tmm tmn tmo tmp tmr tms tmt tnd tne tni tnl tnm tnn tno tnp tnr tns tnt to- tod toe toi tol tom ton too top tor tos tot tpd tpe tpi tpl tpm tpn tpo tpp tpr tps tpt trd tre tri trl trm trn tro trp trr trs trt tsd tse tsi tsl tsm tsn tso tsp tsr tss tst ttd tte tti ttl ttm ttn tto ttp ttr tts ttt