res ret reu rex rga rgc rge rgg rgi rgn rgo rgr rgs rgt rgx ria ric rie rig rii rin rio rir ris rit rix rna rnc rng rni rnn rno rnr rns rnt rnu roa roc roe rog roi ron roo ror ros rot rou rox rra rrc rrg rri rrn rrr rrs rrt rru rsa rsc rse rsg rsi rsn rso rsr rss rst rsu rsx rta rtc rte rtg rti rtn rto rtr rts rtt rtu rtx rua ruc rue rug rui run ruo rur rus rut ruu rux rxr rxs saa sac sae sag sai san sao sar sas sat sau sax sca scc sce scg sci scn sco scr scs sct scu scx se- sea sec see seg sei sen seo ser ses set seu sex sga sgc sge sgg sgi sgn sgo sgr sgs sgt sgu sgx sia sic sie sig sii sin sio sir sis sit siu six sna snc sne sng sni snn sno snr sns snt snu soa soc soe sog soi son soo sor sos sot sou sox sr- sra src sre srg sri srn sro srr srs srt srx ss- ssa ssc sse ssg ssi ssn sso ssr sss sst ssu ssx sta stc ste stg sti stn sto str sts stt stu stx sua suc sue sug sui sun suo sur sus sut suu sux sxc sxi sxn sxs sxt sxu t-x taa tac tae tag tai tan tao tar tas tat tau tax tca tcc tce tcg tci tcn tco tcr tcs tct tcu tcx te- tea tec tee teg tei ten teo ter tes tet teu tex tga tgc tge tgg tgi tgn tgo tgr tgs tgt tgu tia tic tie tig tii tin tio tir tis tit tiu tix tna tnc tne tng tni tnn tno tnr tns tnt tnx to- toa toc toe tog toi ton too tor tos tot tou tox tra trc tre trg tri trn tro trr trs trt tru trx tsa tsc tse tsg tsi tsn tso tsr tss tst tsu tsx tta ttc tte ttg tti ttn tto ttr tts ttt ttu ttx tua tuc tue tug tui tun tuo tur tus tut tuu tux txe txi txn txs txt txu ua- uaa uac uae uag uai uan uao uar uas uat uau uca ucc uce ucg uci ucn uco ucr ucs uct ucu uea uec uee ueg uei uen uer ues uet uga ugc uge ugg ugi ugn ugo ugr ugs ugt ugu ugx uia uic uie uig uii uin uio uir uis uit uiu un- una unc une ung uni unn uno unr uns unt unu unx uoa uoc uoe uog uon uoo uor uos uot uox ur- ura urc ure urg uri urn uro urr urs urt uru urx usa usc use usg usi usn uso usr uss ust usu usx uta utc ute uti utn uto utr uts utt utu utx uua uuc uue uug uun uur uus uut uuu uxc uxo uxr uxt uxu xaa xac xag xan xar xas xat xau xci xcr xcx xee xeg xen xer xes xet xeu xex xge xgi xia xic xie xii xin xio xis xit xiu xix xna xnc xno xns xnu xoa xoc xog xoi xon xoo xor xos xot xox xrc xrt xrx xsa xsc xsi xss xst xtc xti xtr xts xtx xue xui xun xus xxi xxo xxx