rce rcg rci rcl rcn rco rcr rcs rcu re- rea rec ree reg rei rel ren reo rer res reu rga rgc rge rgg rgi rgn rgo rgr rgs ria ric rie rig rii ril rin rio rir ris rla rlc rle rlg rli rll rln rlo rlr rls rlu rna rnc rng rni rnn rno rnr rns rnu roa roc roe rog roi rol ron roo ror ros rou rra rrc rrg rri rrl rrn rrr rrs rru rsa rsc rse rsg rsi rsl rsn rso rsr rss rsu rua ruc rue rug rui run ruo rur rus ruu saa sac sae sag sai sal san sao sar sas sau sca scc sce scg sci scl scn sco scr scs scu se- sea sec see seg sei sel sen seo ser ses seu sga sgc sge sgg sgi sgl sgn sgo sgr sgs sgu sia sic sie sig sii sil sin sio sir sis siu sla slc sle slg sli sll sln slo slr sls slu sna snc sne sng sni snl snn sno snr sns snu soa soc soe sog soi sol son soo sor sos sou sr- sra src sre srg sri srl srn sro srr srs ss- ssa ssc sse ssg ssi ssl ssn sso ssr sss ssu sua suc sue sug sui sul sun suo sur sus suu ua- uaa uac uae uag uai ual uan uao uar uas uau uca ucc uce ucg uci ucl ucn uco ucr ucs ucu uea uec uee ueg uei uel uen uer ues uga ugc uge ugg ugi ugl ugn ugo ugr ugs ugu uia uic uie uig uii uil uin uio uir uis uiu ula ulc ule ulg uli ull uln ulo ulr uls ulu un- una unc une ung uni unl unn uno unr uns unu uoa uoc uoe uog uol uon uoo uor uos ur- ura urc ure urg uri url urn uro urr urs uru usa usc use usg usi usl usn uso usr uss usu uua uuc uue uug uun uur uus uuu