rdo rdp rdr rds rdu re- rea red ree reg rei ren reo rep rer res reu rga rgd rge rgg rgi rgn rgo rgp rgr rgs ria rid rie rig rii rin rio rip rir ris rna rnd rng rni rnn rno rnp rnr rns rnu roa rod roe rog roi ron roo rop ror ros rou rpa rpd rpe rpg rpi rpn rpo rpp rpr rps rpu rra rrd rrg rri rrn rrp rrr rrs rru rsa rsd rse rsg rsi rsn rso rsp rsr rss rsu rua rud rue rug rui run ruo rup rur rus ruu saa sad sae sag sai san sao sap sar sas sau sda sdd sde sdg sdi sdn sdo sdp sdr sds sdu se- sea sed see seg sei sen seo sep ser ses seu sga sgd sge sgg sgi sgn sgo sgp sgr sgs sgu sia sid sie sig sii sin sio sip sir sis siu sna snd sne sng sni snn sno snp snr sns snu soa sod soe sog soi son soo sop sor sos sou spa spd spe spg spi spn spo spp spr sps spu sr- sra srd sre srg sri srn sro srp srr srs ss- ssa ssd sse ssg ssi ssn sso ssp ssr sss ssu sua sud sue sug sui sun suo sup sur sus suu ua- uaa uad uae uag uai uan uao uap uar uas uau uda udd ude udg udi udn udo udp udr uds udu uea ued uee ueg uei uen uep uer ues uga uge ugg ugi ugn ugo ugp ugr ugs ugu uia uid uie uig uii uin uio uip uir uis uiu un- una und une ung uni unn uno unp unr uns unu uoa uod uoe uog uon uoo uop uor uos up- upa upd upe upg upi upn upo upp upr ups upu ur- ura urd ure urg uri urn uro urp urr urs uru usa usd use usg usi usn uso usp usr uss usu uua uue uug uun uur uus uuu