ptt ra- raa rad rae raf rai ram rao rap rar ras rat rda rdd rde rdf rdi rdm rdo rdp rdr rds rdt re- rea red ree ref rei rem reo rep rer res ret rfa rfd rfe rff rfi rfm rfo rfp rfr rfs rft ria rid rie rif rii rim rio rip rir ris rit rma rmd rme rmf rmi rmm rmo rmp rmr rms rmt roa rod roe rof roi rom roo rop ror ros rot rpa rpd rpe rpf rpi rpm rpo rpp rpr rps rpt rra rrd rrf rri rrm rrp rrr rrs rrt rsa rsd rse rsf rsi rsm rso rsp rsr rss rst rta rtd rte rtf rti rtm rto rtp rtr rts rtt saa sad sae saf sai sam sao sap sar sas sat sda sdd sde sdf sdi sdm sdo sdp sdr sds sdt se- sea sed see sef sei sem seo sep ser ses set sfa sfd sfe sff sfi sfm sfo sfp sfr sfs sft sia sid sie sif sii sim sio sip sir sis sit sma smd sme smf smi smm smo smp smr sms smt soa sod soe sof soi som soo sop sor sos sot spa spd spe spf spi spm spo spp spr sps spt sr- sra srd sre srf sri srm sro srp srr srs srt ss- ssa ssd sse ssf ssi ssm sso ssp ssr sss sst sta std ste stf sti stm sto stp str sts stt taa tad tae taf tai tam tao tap tar tas tat tda tdd tde tdf tdi tdm tdo tdp tdr tds tdt te- tea ted tee tef tei tem teo tep ter tes tet tfa tfd tfe tff tfi tfm tfo tfp tfr tfs tft tia tid tie tif tii tim tio tip tir tis tit tma tmd tme tmf tmi tmm tmo tmp tmr tms tmt to- toa tod toe tof toi tom too top tor tos tot tpa tpd tpe tpf tpi tpm tpo tpp tpr tps tpt tra trd tre trf tri trm tro trp trr trs trt tsa tsd tse tsf tsi tsm tso tsp tsr tss tst tta ttd tte ttf tti ttm tto ttp ttr tts ttt