reu rex rga rgc rge rgg rgi rgn rgr rgs rgt rgx ria ric rie rig rii ril rin rir ris rit rix rla rlc rle rlg rli rll rln rlr rls rlt rlu rna rnc rng rni rnn rnr rns rnt rnu rra rrc rrg rri rrl rrn rrr rrs rrt rru rsa rsc rse rsg rsi rsl rsn rsr rss rst rsu rsx rta rtc rte rtg rti rtl rtn rtr rts rtt rtu rtx rua ruc rue rug rui run rur rus rut ruu rux rxr rxs saa sac sae sag sai sal san sar sas sat sau sax sca scc sce scg sci scl scn scr scs sct scu scx se- sea sec see seg sei sel sen ser ses set seu sex sga sgc sge sgg sgi sgl sgn sgr sgs sgt sgu sgx sia sic sie sig sii sil sin sir sis sit siu six sla slc sle slg sli sll sln slr sls slt slu slx sna snc sne sng sni snl snn snr sns snt snu sr- sra src sre srg sri srl srn srr srs srt srx ss- ssa ssc sse ssg ssi ssl ssn ssr sss sst ssu ssx sta stc ste stg sti stl stn str sts stt stu stx sua suc sue sug sui sul sun sur sus sut suu sux sxc sxi sxl sxn sxs sxt sxu t-x taa tac tae tag tai tal tan tar tas tat tau tax tca tcc tce tcg tci tcl tcn tcr tcs tct tcu tcx te- tea tec tee teg tei tel ten ter tes tet teu tex tga tgc tge tgg tgi tgl tgn tgr tgs tgt tgu tia tic tie tig tii til tin tir tis tit tiu tix tla tlc tle tlg tli tll tln tlr tls tlt tlu tlx tna tnc tne tng tni tnl tnn tnr tns tnt tnx tra trc tre trg tri trl trn trr trs trt tru trx tsa tsc tse tsg tsi tsl tsn tsr tss tst tsu tsx tta ttc tte ttg tti ttl ttn ttr tts ttt ttu ttx tua tuc tue tug tui tul tun tur tus tut tuu tux txe txi txl txn txs txt txu ua- uaa uac uae uag uai ual uan uar uas uat uau uca ucc uce ucg uci ucl ucn ucr ucs uct ucu uea uec uee ueg uei uel uen uer ues uet uga ugc uge ugg ugi ugl ugn ugr ugs ugt ugu ugx uia uic uie uig uii uil uin uir uis uit uiu ula ulc ule ulg uli ull uln ulr uls ult ulu un- una unc une ung uni unl unn unr uns unt unu unx ur- ura urc ure urg uri url urn urr urs urt uru urx usa usc use usg usi usl usn usr uss ust usu usx uta utc ute uti utl utn utr uts utt utu utx uua uuc uue uug uun uur uus uut uuu uxc uxr uxt uxu xaa xac xag xal xan xar xas xat xau xci xcl xcr xcx xee xeg xel xen xer xes xet xeu xex xge xgi xgl xia xic xie xii xin xis xit xiu xix xla xlg xli xlr xls xlt xna xnc xns xnu xrc xrt xrx xsa xsc xsi xsl xss xst xtc xti xtr xts xtx xue xui xul xun xus xxi xxl xxx