ras rat re- rea ree ref reg rei rel reo rep rer res ret rfa rfe rff rfg rfi rfl rfo rfp rfr rfs rft rga rge rgf rgg rgi rgo rgp rgr rgs rgt ria rie rif rig rii ril rio rip rir ris rit rla rle rlf rlg rli rll rlo rlp rlr rls rlt roa roe rof rog roi rol roo rop ror ros rot rpa rpe rpf rpg rpi rpl rpo rpp rpr rps rpt rra rrf rrg rri rrl rrp rrr rrs rrt rsa rse rsf rsg rsi rsl rso rsp rsr rss rst rta rte rtf rtg rti rtl rto rtp rtr rts rtt saa sae saf sag sai sal sao sap sar sas sat se- sea see sef seg sei sel seo sep ser ses set sfa sfe sff sfg sfi sfl sfo sfp sfr sfs sft sga sge sgf sgg sgi sgl sgo sgp sgr sgs sgt sia sie sif sig sii sil sio sip sir sis sit sla sle slf slg sli sll slo slp slr sls slt soa soe sof sog soi sol soo sop sor sos sot spa spe spf spg spi spl spo spp spr sps spt sr- sra sre srf srg sri srl sro srp srr srs srt ss- ssa sse ssf ssg ssi ssl sso ssp ssr sss sst sta ste stf stg sti stl sto stp str sts stt taa tae taf tag tai tal tao tap tar tas tat te- tea tee tef teg tei tel teo tep ter tes tet tfa tfe tff tfg tfi tfl tfo tfp tfr tfs tft tga tge tgf tgg tgi tgl tgo tgp tgr tgs tgt tia tie tif tig tii til tio tip tir tis tit tla tle tlf tlg tli tll tlo tlp tlr tls tlt to- toa toe tof tog toi tol too top tor tos tot tpa tpe tpf tpg tpi tpl tpo tpp tpr tps tpt tra tre trf trg tri trl tro trp trr trs trt tsa tse tsf tsg tsi tsl tso tsp tsr tss tst tta tte ttf ttg tti ttl tto ttp ttr tts ttt