pts ptt ra- raa rac rae rag rai ran rao rap rar ras rat rca rcc rce rcg rci rcn rco rcp rcr rcs rct re- rea rec ree reg rei ren reo rep rer res ret rga rgc rge rgg rgi rgn rgo rgp rgr rgs rgt ria ric rie rig rii rin rio rip rir ris rit rna rnc rng rni rnn rno rnp rnr rns rnt roa roc roe rog roi ron roo rop ror ros rot rpa rpc rpe rpg rpi rpn rpo rpp rpr rps rpt rra rrc rrg rri rrn rrp rrr rrs rrt rsa rsc rse rsg rsi rsn rso rsp rsr rss rst rta rtc rte rtg rti rtn rto rtp rtr rts rtt saa sac sae sag sai san sao sap sar sas sat sca scc sce scg sci scn sco scp scr scs sct se- sea sec see seg sei sen seo sep ser ses set sga sgc sge sgg sgi sgn sgo sgp sgr sgs sgt sia sic sie sig sii sin sio sip sir sis sit sna snc sne sng sni snn sno snp snr sns snt soa soc soe sog soi son soo sop sor sos sot spa spc spe spg spi spn spo spp spr sps spt sr- sra src sre srg sri srn sro srp srr srs srt ss- ssa ssc sse ssg ssi ssn sso ssp ssr sss sst sta stc ste stg sti stn sto stp str sts stt taa tac tae tag tai tan tao tap tar tas tat tca tcc tce tcg tci tcn tco tcp tcr tcs tct te- tea tec tee teg tei ten teo tep ter tes tet tga tgc tge tgg tgi tgn tgo tgp tgr tgs tgt tia tic tie tig tii tin tio tip tir tis tit tna tnc tne tng tni tnn tno tnp tnr tns tnt to- toa toc toe tog toi ton too top tor tos tot tpa tpc tpe tpg tpi tpn tpo tpp tpr tps tpt tra trc tre trg tri trn tro trp trr trs trt tsa tsc tse tsg tsi tsn tso tsp tsr tss tst tta ttc tte ttg tti ttn tto ttp ttr tts ttt