ptm pto ptp ptr pts ptt ra- raa rac rae raf rai ram rao rap rar ras rat rca rcc rce rcf rci rcm rco rcp rcr rcs rct re- rea rec ree ref rei rem reo rep rer res ret rfa rfc rfe rff rfi rfm rfo rfp rfr rfs rft ria ric rie rif rii rim rio rip rir ris rit rma rmc rme rmf rmi rmm rmo rmp rmr rms rmt roa roc roe rof roi rom roo rop ror ros rot rpa rpc rpe rpf rpi rpm rpo rpp rpr rps rpt rra rrc rrf rri rrm rrp rrr rrs rrt rsa rsc rse rsf rsi rsm rso rsp rsr rss rst rta rtc rte rtf rti rtm rto rtp rtr rts rtt saa sac sae saf sai sam sao sap sar sas sat sca scc sce scf sci scm sco scp scr scs sct se- sea sec see sef sei sem seo sep ser ses set sfa sfc sfe sff sfi sfm sfo sfp sfr sfs sft sia sic sie sif sii sim sio sip sir sis sit sma smc sme smf smi smm smo smp smr sms smt soa soc soe sof soi som soo sop sor sos sot spa spc spe spf spi spm spo spp spr sps spt sr- sra src sre srf sri srm sro srp srr srs srt ss- ssa ssc sse ssf ssi ssm sso ssp ssr sss sst sta stc ste stf sti stm sto stp str sts stt taa tac tae taf tai tam tao tap tar tas tat tca tcc tce tcf tci tcm tco tcp tcr tcs tct te- tea tec tee tef tei tem teo tep ter tes tet tfa tfc tfe tff tfi tfm tfo tfp tfr tfs tft tia tic tie tif tii tim tio tip tir tis tit tma tmc tme tmf tmi tmm tmo tmp tmr tms tmt to- toa toc toe tof toi tom too top tor tos tot tpa tpc tpe tpf tpi tpm tpo tpp tpr tps tpt tra trc tre trf tri trm tro trp trr trs trt tsa tsc tse tsf tsi tsm tso tsp tsr tss tst tta ttc tte ttf tti ttm tto ttp ttr tts ttt