rgn rgo rgp rgr rgs rgt rie rif rig rii ril rin rio rip rir ris rit rle rlf rlg rli rll rln rlo rlp rlr rls rlt rng rni rnn rno rnp rnr rns rnt roe rof rog roi rol ron roo rop ror ros rot rpe rpf rpg rpi rpl rpn rpo rpp rpr rps rpt rrf rrg rri rrl rrn rrp rrr rrs rrt rse rsf rsg rsi rsl rsn rso rsp rsr rss rst rte rtf rtg rti rtl rtn rto rtp rtr rts rtt se- see sef seg sei sel sen seo sep ser ses set sfe sff sfg sfi sfl sfn sfo sfp sfr sfs sft sge sgf sgg sgi sgl sgn sgo sgp sgr sgs sgt sie sif sig sii sil sin sio sip sir sis sit sle slf slg sli sll sln slo slp slr sls slt sne snf sng sni snl snn sno snp snr sns snt soe sof sog soi sol son soo sop sor sos sot spe spf spg spi spl spn spo spp spr sps spt sr- sre srf srg sri srl srn sro srp srr srs srt ss- sse ssf ssg ssi ssl ssn sso ssp ssr sss sst ste stf stg sti stl stn sto stp str sts stt te- tee tef teg tei tel ten teo tep ter tes tet tfe tff tfg tfi tfl tfn tfo tfp tfr tfs tft tge tgf tgg tgi tgl tgn tgo tgp tgr tgs tgt tie tif tig tii til tin tio tip tir tis tit tle tlf tlg tli tll tln tlo tlp tlr tls tlt tne tnf tng tni tnl tnn tno tnp tnr tns tnt to- toe tof tog toi tol ton too top tor tos tot tpe tpf tpg tpi tpl tpn tpo tpp tpr tps tpt tre trf trg tri trl trn tro trp trr trs trt tse tsf tsg tsi tsl tsn tso tsp tsr tss tst tte ttf ttg tti ttl ttn tto ttp ttr tts ttt