rca rcc rcd rce rcf rci rcn rcp rcr rct rcu rda rdc rdd rde rdf rdi rdn rdp rdr rdt rdu re- rea rec red ree ref rei ren rep rer ret reu rfa rfc rfd rfe rff rfi rfn rfp rfr rft rfu ria ric rid rie rif rii rin rip rir rit rna rnc rnd rni rnn rnp rnr rnt rnu rpa rpc rpd rpe rpf rpi rpn rpp rpr rpt rpu rra rrc rrd rrf rri rrn rrp rrr rrt rru rta rtc rtd rte rtf rti rtn rtp rtr rtt rtu rua ruc rud rue ruf rui run rup rur rut ruu taa tac tad tae taf tai tan tap tar tat tau tca tcc tcd tce tcf tci tcn tcp tcr tct tcu tda tdc tdd tde tdf tdi tdn tdp tdr tdt tdu te- tea tec ted tee tef tei ten tep ter tet teu tfa tfc tfd tfe tff tfi tfn tfp tfr tft tfu tia tic tid tie tif tii tin tip tir tit tiu tna tnc tnd tne tnf tni tnn tnp tnr tnt tpa tpc tpd tpe tpf tpi tpn tpp tpr tpt tpu tra trc trd tre trf tri trn trp trr trt tru tta ttc ttd tte ttf tti ttn ttp ttr ttt ttu tua tuc tud tue tuf tui tun tup tur tut tuu ua- uaa uac uad uae uaf uai uan uap uar uat uau uca ucc ucd uce ucf uci ucn ucp ucr uct ucu uda udc udd ude udf udi udn udp udr udt udu uea uec ued uee uef uei uen uep uer uet ufa ufc ufd ufe uff ufi ufn ufp ufr uft ufu uia uic uid uie uif uii uin uip uir uit uiu un- una unc und une unf uni unn unp unr unt unu up- upa upc upd upe upf upi upn upp upr upt upu ur- ura urc urd ure urf uri urn urp urr urt uru uta utc utd ute utf uti utn utp utr utt utu uua uuc uue uun uur uut uuu