rfn rfp rfr rfs rft rgd rge rgf rgg rgi rgn rgp rgr rgs rgt rid rie rif rig rii ril rin rip rir ris rit rld rle rlf rlg rli rll rln rlp rlr rls rlt rnd rng rni rnn rnp rnr rns rnt rpd rpe rpf rpg rpi rpl rpn rpp rpr rps rpt rrd rrf rrg rri rrl rrn rrp rrr rrs rrt rsd rse rsf rsg rsi rsl rsn rsp rsr rss rst rtd rte rtf rtg rti rtl rtn rtp rtr rts rtt sdd sde sdf sdg sdi sdl sdn sdp sdr sds sdt se- sed see sef seg sei sel sen sep ser ses set sfd sfe sff sfg sfi sfl sfn sfp sfr sfs sft sgd sge sgf sgg sgi sgl sgn sgp sgr sgs sgt sid sie sif sig sii sil sin sip sir sis sit sld sle slf slg sli sll sln slp slr sls slt snd sne snf sng sni snl snn snp snr sns snt spd spe spf spg spi spl spn spp spr sps spt sr- srd sre srf srg sri srl srn srp srr srs srt ss- ssd sse ssf ssg ssi ssl ssn ssp ssr sss sst std ste stf stg sti stl stn stp str sts stt tdd tde tdf tdg tdi tdl tdn tdp tdr tds tdt te- ted tee tef teg tei tel ten tep ter tes tet tfd tfe tff tfg tfi tfl tfn tfp tfr tfs tft tge tgf tgg tgi tgl tgn tgp tgr tgs tgt tid tie tif tig tii til tin tip tir tis tit tld tle tlf tlg tli tll tln tlp tlr tls tlt tnd tne tnf tng tni tnl tnn tnp tnr tns tnt tpd tpe tpf tpg tpi tpl tpn tpp tpr tps tpt trd tre trf trg tri trl trn trp trr trs trt tsd tse tsf tsg tsi tsl tsn tsp tsr tss tst ttd tte ttf ttg tti ttl ttn ttp ttr tts ttt