rdi rdn rdo rdr rds rdt re- rea red ree ref reg rei ren reo rer res ret rfa rfd rfe rff rfg rfi rfn rfo rfr rfs rft rga rgd rge rgf rgg rgi rgn rgo rgr rgs rgt ria rid rie rif rig rii rin rio rir ris rit rna rnd rng rni rnn rno rnr rns rnt roa rod roe rof rog roi ron roo ror ros rot rra rrd rrf rrg rri rrn rrr rrs rrt rsa rsd rse rsf rsg rsi rsn rso rsr rss rst rta rtd rte rtf rtg rti rtn rto rtr rts rtt saa sad sae saf sag sai san sao sar sas sat sda sdd sde sdf sdg sdi sdn sdo sdr sds sdt se- sea sed see sef seg sei sen seo ser ses set sfa sfd sfe sff sfg sfi sfn sfo sfr sfs sft sga sgd sge sgf sgg sgi sgn sgo sgr sgs sgt sia sid sie sif sig sii sin sio sir sis sit sna snd sne snf sng sni snn sno snr sns snt soa sod soe sof sog soi son soo sor sos sot sr- sra srd sre srf srg sri srn sro srr srs srt ss- ssa ssd sse ssf ssg ssi ssn sso ssr sss sst sta std ste stf stg sti stn sto str sts stt taa tad tae taf tag tai tan tao tar tas tat tda tdd tde tdf tdg tdi tdn tdo tdr tds tdt te- tea ted tee tef teg tei ten teo ter tes tet tfa tfd tfe tff tfg tfi tfn tfo tfr tfs tft tga tge tgf tgg tgi tgn tgo tgr tgs tgt tia tid tie tif tig tii tin tio tir tis tit tna tnd tne tnf tng tni tnn tno tnr tns tnt to- toa tod toe tof tog toi ton too tor tos tot tra trd tre trf trg tri trn tro trr trs trt tsa tsd tse tsf tsg tsi tsn tso tsr tss tst tta ttd tte ttf ttg tti ttn tto ttr tts ttt