ras rat rba rbb rbc rbe rbg rbl rbm rbo rbr rbs rbt rca rcb rcc rce rcg rcl rcm rco rcr rcs rct re- rea reb rec ree reg rel rem reo rer res ret rga rgb rgc rge rgg rgo rgr rgs rgt rla rlc rle rlg rll rlm rlo rlr rls rlt rma rmb rmc rme rmg rml rmm rmo rmr rms rmt roa rob roc roe rog rol rom roo ror ros rot rra rrb rrc rrg rrl rrm rrr rrs rrt rsa rsb rsc rse rsg rsl rsm rso rsr rss rst rta rtb rtc rte rtg rtl rtm rto rtr rts rtt saa sab sac sae sag sal sam sao sar sas sat sba sbb sbc sbe sbg sbl sbm sbo sbr sbs sbt sca scb scc sce scg scl scm sco scr scs sct se- sea seb sec see seg sel sem seo ser ses set sga sgb sgc sge sgg sgl sgm sgo sgr sgs sgt sla slb slc sle slg sll slm slo slr sls slt sma smb smc sme smg sml smm smo smr sms smt soa sob soc soe sog sol som soo sor sos sot sr- sra srb src sre srg srl srm sro srr srs srt ss- ssa ssb ssc sse ssg ssl ssm sso ssr sss sst sta stb stc ste stg stl stm sto str sts stt taa tab tac tae tag tal tam tao tar tas tat tba tbb tbc tbe tbg tbl tbm tbo tbr tbs tbt tca tcb tcc tce tcg tcl tcm tco tcr tcs tct te- tea teb tec tee teg tel tem teo ter tes tet tga tgb tgc tge tgg tgl tgm tgo tgr tgs tgt tla tlc tle tlg tll tlm tlo tlr tls tlt tma tmb tmc tme tmg tml tmm tmo tmr tms tmt to- toa tob toc toe tog tol tom too tor tos tot tra trb trc tre trg trl trm tro trr trs trt tsa tsb tsc tse tsg tsl tsm tso tsr tss tst tta ttb ttc tte ttg ttl ttm tto ttr tts ttt