pto ptp ptr ptt rcc rcd rce rcg rci rcj rcn rco rcp rcr rct rdc rdd rde rdg rdi rdj rdn rdo rdp rdr rdt re- rec red ree reg rei ren reo rep rer ret rgc rgd rge rgg rgi rgn rgo rgp rgr rgt ric rid rie rig rii rin rio rip rir rit rjc rjg rjp rjr rnc rnd rng rni rnn rno rnp rnr rnt roc rod roe rog roi roj ron roo rop ror rot rpc rpd rpe rpg rpi rpn rpo rpp rpr rpt rrc rrd rrg rri rrn rrp rrr rrt rtc rtd rte rtg rti rtj rtn rto rtp rtr rtt tcc tcd tce tcg tci tcj tcn tco tcp tcr tct tdc tdd tde tdg tdi tdn tdo tdp tdr tdt te- tec ted tee teg tei tej ten teo tep ter tet tgc tge tgg tgi tgn tgo tgp tgr tgt tic tid tie tig tii tin tio tip tir tit tjc tjd tje tji tjo tjp tjr tnc tnd tne tng tni tnn tno tnp tnr tnt to- toc tod toe tog toi toj ton too top tor tot tpc tpd tpe tpg tpi tpj tpn tpo tpp tpr tpt trc trd tre trg tri trn tro trp trr trt ttc ttd tte ttg tti ttn tto ttp ttr ttt