raf rai ral ram ran rar ras rat rca rcc rce rcf rci rcl rcm rcn rcr rcs rct re- rea rec ree ref rei rel rem ren rer res ret rfa rfc rfe rff rfi rfl rfm rfn rfr rfs rft ria ric rie rif rii ril rim rin rir ris rit rla rlc rle rlf rli rll rlm rln rlr rls rlt rma rmc rme rmf rmi rml rmm rmn rmr rms rmt rna rnc rni rnm rnn rnr rns rnt rra rrc rrf rri rrl rrm rrn rrr rrs rrt rsa rsc rse rsf rsi rsl rsm rsn rsr rss rst rta rtc rte rtf rti rtl rtm rtn rtr rts rtt saa sac sae saf sai sal sam san sar sas sat sca scc sce scf sci scl scm scn scr scs sct se- sea sec see sef sei sel sem sen ser ses set sfa sfc sfe sff sfi sfl sfm sfn sfr sfs sft sia sic sie sif sii sil sim sin sir sis sit sla slc sle slf sli sll slm sln slr sls slt sma smc sme smf smi sml smm smn smr sms smt sna snc sne snf sni snl snm snn snr sns snt sr- sra src sre srf sri srl srm srn srr srs srt ss- ssa ssc sse ssf ssi ssl ssm ssn ssr sss sst sta stc ste stf sti stl stm stn str sts stt taa tac tae taf tai tal tam tan tar tas tat tca tcc tce tcf tci tcl tcm tcn tcr tcs tct te- tea tec tee tef tei tel tem ten ter tes tet tfa tfc tfe tff tfi tfl tfm tfn tfr tfs tft tia tic tie tif tii til tim tin tir tis tit tla tlc tle tlf tli tll tlm tln tlr tls tlt tma tmc tme tmf tmi tml tmm tmn tmr tms tmt tna tnc tne tnf tni tnl tnm tnn tnr tns tnt tra trc tre trf tri trl trm trn trr trs trt tsa tsc tse tsf tsi tsl tsm tsn tsr tss tst tta ttc tte ttf tti ttl ttm ttn ttr tts ttt