rcf rcg rci rcn rco rcr rcs rct rda rdc rdd rdf rdg rdi rdn rdo rdr rds rdt rfa rfc rfd rff rfg rfi rfn rfo rfr rfs rft rga rgc rgd rgf rgg rgi rgn rgo rgr rgs rgt ria ric rid rif rig rii rin rio rir ris rit rna rnc rnd rng rni rnn rno rnr rns rnt roa roc rod rof rog roi ron roo ror ros rot rra rrc rrd rrf rrg rri rrn rrr rrs rrt rsa rsc rsd rsf rsg rsi rsn rso rsr rss rst rta rtc rtd rtf rtg rti rtn rto rtr rts rtt saa sac sad saf sag sai san sao sar sas sat sca scc scd scf scg sci scn sco scr scs sct sda sdc sdd sdf sdg sdi sdn sdo sdr sds sdt sfa sfc sfd sff sfg sfi sfn sfo sfr sfs sft sga sgc sgd sgf sgg sgi sgn sgo sgr sgs sgt sia sic sid sif sig sii sin sio sir sis sit sna snc snd snf sng sni snn sno snr sns snt soa soc sod sof sog soi son soo sor sos sot sr- sra src srd srf srg sri srn sro srr srs srt ss- ssa ssc ssd ssf ssg ssi ssn sso ssr sss sst sta stc std stf stg sti stn sto str sts stt taa tac tad taf tag tai tan tao tar tas tat tca tcc tcd tcf tcg tci tcn tco tcr tcs tct tda tdc tdd tdf tdg tdi tdn tdo tdr tds tdt tfa tfc tfd tff tfg tfi tfn tfo tfr tfs tft tga tgc tgf tgg tgi tgn tgo tgr tgs tgt tia tic tid tif tig tii tin tio tir tis tit tna tnc tnd tnf tng tni tnn tno tnr tns tnt to- toa toc tod tof tog toi ton too tor tos tot tra trc trd trf trg tri trn tro trr trs trt tsa tsc tsd tsf tsg tsi tsn tso tsr tss tst tta ttc ttd ttf ttg tti ttn tto ttr tts ttt