ras rat rca rcc rcd rce rcg rcm rcn rco rcr rcs rct rda rdc rdd rde rdg rdm rdn rdo rdr rds rdt re- rea rec red ree reg rem ren reo rer res ret rga rgc rgd rge rgg rgn rgo rgr rgs rgt rma rmc rmd rme rmg rmm rmn rmo rmr rms rmt rna rnc rnd rng rnm rnn rno rnr rns rnt roa roc rod roe rog rom ron roo ror ros rot rra rrc rrd rrg rrm rrn rrr rrs rrt rsa rsc rsd rse rsg rsm rsn rso rsr rss rst rta rtc rtd rte rtg rtm rtn rto rtr rts rtt saa sac sad sae sag sam san sao sar sas sat sca scc scd sce scg scm scn sco scr scs sct sda sdc sdd sde sdg sdm sdn sdo sdr sds sdt se- sea sec sed see seg sem sen seo ser ses set sga sgc sgd sge sgg sgm sgn sgo sgr sgs sgt sma smc smd sme smg smm smn smo smr sms smt sna snc snd sne sng snm snn sno snr sns snt soa soc sod soe sog som son soo sor sos sot sr- sra src srd sre srg srm srn sro srr srs srt ss- ssa ssc ssd sse ssg ssm ssn sso ssr sss sst sta stc std ste stg stm stn sto str sts stt taa tac tad tae tag tam tan tao tar tas tat tca tcc tcd tce tcg tcm tcn tco tcr tcs tct tda tdc tdd tde tdg tdm tdn tdo tdr tds tdt te- tea tec ted tee teg tem ten teo ter tes tet tga tgc tge tgg tgm tgn tgo tgr tgs tgt tma tmc tmd tme tmg tmm tmn tmo tmr tms tmt tna tnc tnd tne tng tnm tnn tno tnr tns tnt to- toa toc tod toe tog tom ton too tor tos tot tra trc trd tre trg trm trn tro trr trs trt tsa tsc tsd tse tsg tsm tsn tso tsr tss tst tta ttc ttd tte ttg ttm ttn tto ttr tts ttt