re- reb rec ree reg rei rel ren reo rer res ret rgb rgc rge rgg rgi rgn rgo rgr rgs rgt rib ric rie rig rii ril rin rio rir ris rit rlc rle rlg rli rll rln rlo rlr rls rlt rnb rnc rng rni rnn rno rnr rns rnt rob roc roe rog roi rol ron roo ror ros rot rrb rrc rrg rri rrl rrn rrr rrs rrt rsb rsc rse rsg rsi rsl rsn rso rsr rss rst rtb rtc rte rtg rti rtl rtn rto rtr rts rtt sbb sbc sbe sbg sbi sbl sbn sbo sbr sbs sbt scb scc sce scg sci scl scn sco scr scs sct se- seb sec see seg sei sel sen seo ser ses set sgb sgc sge sgg sgi sgl sgn sgo sgr sgs sgt sib sic sie sig sii sil sin sio sir sis sit slb slc sle slg sli sll sln slo slr sls slt snb snc sne sng sni snl snn sno snr sns snt sob soc soe sog soi sol son soo sor sos sot sr- srb src sre srg sri srl srn sro srr srs srt ss- ssb ssc sse ssg ssi ssl ssn sso ssr sss sst stb stc ste stg sti stl stn sto str sts stt tbb tbc tbe tbg tbi tbl tbn tbo tbr tbs tbt tcb tcc tce tcg tci tcl tcn tco tcr tcs tct te- teb tec tee teg tei tel ten teo ter tes tet tgb tgc tge tgg tgi tgl tgn tgo tgr tgs tgt tib tic tie tig tii til tin tio tir tis tit tlc tle tlg tli tll tln tlo tlr tls tlt tnb tnc tne tng tni tnl tnn tno tnr tns tnt to- tob toc toe tog toi tol ton too tor tos tot trb trc tre trg tri trl trn tro trr trs trt tsb tsc tse tsg tsi tsl tsn tso tsr tss tst ttb ttc tte ttg tti ttl ttn tto ttr tts ttt