pti ptm pto ptp ptr pts ptt ra- raa rab rac rae rai ram rao rap rar ras rat rba rbb rbc rbe rbi rbm rbo rbp rbr rbs rbt rca rcb rcc rce rci rcm rco rcp rcr rcs rct re- rea reb rec ree rei rem reo rep rer res ret ria rib ric rie rii rim rio rip rir ris rit rma rmb rmc rme rmi rmm rmo rmp rmr rms rmt roa rob roc roe roi rom roo rop ror ros rot rpa rpb rpc rpe rpi rpm rpo rpp rpr rps rpt rra rrb rrc rri rrm rrp rrr rrs rrt rsa rsb rsc rse rsi rsm rso rsp rsr rss rst rta rtb rtc rte rti rtm rto rtp rtr rts rtt saa sab sac sae sai sam sao sap sar sas sat sba sbb sbc sbe sbi sbm sbo sbp sbr sbs sbt sca scb scc sce sci scm sco scp scr scs sct se- sea seb sec see sei sem seo sep ser ses set sia sib sic sie sii sim sio sip sir sis sit sma smb smc sme smi smm smo smp smr sms smt soa sob soc soe soi som soo sop sor sos sot spa spb spc spe spi spm spo spp spr sps spt sr- sra srb src sre sri srm sro srp srr srs srt ss- ssa ssb ssc sse ssi ssm sso ssp ssr sss sst sta stb stc ste sti stm sto stp str sts stt taa tab tac tae tai tam tao tap tar tas tat tba tbb tbc tbe tbi tbm tbo tbp tbr tbs tbt tca tcb tcc tce tci tcm tco tcp tcr tcs tct te- tea teb tec tee tei tem teo tep ter tes tet tia tib tic tie tii tim tio tip tir tis tit tma tmb tmc tme tmi tmm tmo tmp tmr tms tmt to- toa tob toc toe toi tom too top tor tos tot tpa tpb tpc tpe tpi tpm tpo tpp tpr tps tpt tra trb trc tre tri trm tro trp trr trs trt tsa tsb tsc tse tsi tsm tso tsp tsr tss tst tta ttb ttc tte tti ttm tto ttp ttr tts ttt