rnn rno rnr rns rnt roa roc rod roe roi roj ron roo ror ros rot rra rrc rrd rri rrn rrr rrs rrt rsa rsc rsd rse rsi rsj rsn rso rsr rss rst rta rtc rtd rte rti rtj rtn rto rtr rts rtt saa sac sad sae sai saj san sao sar sas sat sca scc scd sce sci scj scn sco scr scs sct sda sdc sdd sde sdi sdj sdn sdo sdr sds sdt se- sea sec sed see sei sej sen seo ser ses set sia sic sid sie sii sij sin sio sir sis sit sja sjc sjd sje sji sjj sjr sjs sjt sna snc snd sne sni snj snn sno snr sns snt soa soc sod soe soi soj son soo sor sos sot sr- sra src srd sre sri srj srn sro srr srs srt ss- ssa ssc ssd sse ssi ssj ssn sso ssr sss sst sta stc std ste sti stj stn sto str sts stt taa tac tad tae tai taj tan tao tar tas tat tca tcc tcd tce tci tcj tcn tco tcr tcs tct tda tdc tdd tde tdi tdn tdo tdr tds tdt te- tea tec ted tee tei tej ten teo ter tes tet tia tic tid tie tii tin tio tir tis tit tjc tjd tje tji tjo tjr tjs tna tnc tnd tne tni tnn tno tnr tns tnt to- toa toc tod toe toi toj ton too tor tos tot tra trc trd tre tri trn tro trr trs trt tsa tsc tsd tse tsi tsj tsn tso tsr tss tst tta ttc ttd tte tti ttn tto ttr tts ttt