ptp ptr pts ptt ra- raa rad rae rai ral ram rao rap rar ras rat rda rdd rde rdi rdl rdm rdo rdp rdr rds rdt re- rea red ree rei rel rem reo rep rer res ret ria rid rie rii ril rim rio rip rir ris rit rla rld rle rli rll rlm rlo rlp rlr rls rlt rma rmd rme rmi rml rmm rmo rmp rmr rms rmt roa rod roe roi rol rom roo rop ror ros rot rpa rpd rpe rpi rpl rpm rpo rpp rpr rps rpt rra rrd rri rrl rrm rrp rrr rrs rrt rsa rsd rse rsi rsl rsm rso rsp rsr rss rst rta rtd rte rti rtl rtm rto rtp rtr rts rtt saa sad sae sai sal sam sao sap sar sas sat sda sdd sde sdi sdl sdm sdo sdp sdr sds sdt se- sea sed see sei sel sem seo sep ser ses set sia sid sie sii sil sim sio sip sir sis sit sla sld sle sli sll slm slo slp slr sls slt sma smd sme smi sml smm smo smp smr sms smt soa sod soe soi sol som soo sop sor sos sot spa spd spe spi spl spm spo spp spr sps spt sr- sra srd sre sri srl srm sro srp srr srs srt ss- ssa ssd sse ssi ssl ssm sso ssp ssr sss sst sta std ste sti stl stm sto stp str sts stt taa tad tae tai tal tam tao tap tar tas tat tda tdd tde tdi tdl tdm tdo tdp tdr tds tdt te- tea ted tee tei tel tem teo tep ter tes tet tia tid tie tii til tim tio tip tir tis tit tla tld tle tli tll tlm tlo tlp tlr tls tlt tma tmd tme tmi tml tmm tmo tmp tmr tms tmt to- toa tod toe toi tol tom too top tor tos tot tpa tpd tpe tpi tpl tpm tpo tpp tpr tps tpt tra trd tre tri trl trm tro trp trr trs trt tsa tsd tse tsi tsl tsm tso tsp tsr tss tst tta ttd tte tti ttl ttm tto ttp ttr tts ttt