rau rca rcc rcd rce rcg rci rcl rcn rcr rcs rcu rda rdc rdd rde rdg rdi rdl rdn rdr rds rdu re- rea rec red ree reg rei rel ren rer res reu rga rgc rgd rge rgg rgi rgn rgr rgs ria ric rid rie rig rii ril rin rir ris rla rlc rld rle rlg rli rll rln rlr rls rlu rna rnc rnd rng rni rnn rnr rns rnu rra rrc rrd rrg rri rrl rrn rrr rrs rru rsa rsc rsd rse rsg rsi rsl rsn rsr rss rsu rua ruc rud rue rug rui run rur rus ruu saa sac sad sae sag sai sal san sar sas sau sca scc scd sce scg sci scl scn scr scs scu sda sdc sdd sde sdg sdi sdl sdn sdr sds sdu se- sea sec sed see seg sei sel sen ser ses seu sga sgc sgd sge sgg sgi sgl sgn sgr sgs sgu sia sic sid sie sig sii sil sin sir sis siu sla slc sld sle slg sli sll sln slr sls slu sna snc snd sne sng sni snl snn snr sns snu sr- sra src srd sre srg sri srl srn srr srs ss- ssa ssc ssd sse ssg ssi ssl ssn ssr sss ssu sua suc sud sue sug sui sul sun sur sus suu ua- uaa uac uad uae uag uai ual uan uar uas uau uca ucc ucd uce ucg uci ucl ucn ucr ucs ucu uda udc udd ude udg udi udl udn udr uds udu uea uec ued uee ueg uei uel uen uer ues uga ugc uge ugg ugi ugl ugn ugr ugs ugu uia uic uid uie uig uii uil uin uir uis uiu ula ulc uld ule ulg uli ull uln ulr uls ulu un- una unc und une ung uni unl unn unr uns unu ur- ura urc urd ure urg uri url urn urr urs uru usa usc usd use usg usi usl usn usr uss usu uua uuc uue uug uun uur uus uuu