rkp rks rku rpa rpc rpd rpe rpf rpg rpk rpp rpr rps rpu rra rrc rrd rrf rrg rrk rrp rrr rrs rru rsa rsc rsd rse rsf rsg rsk rsp rsr rss rsu rua ruc rud rue ruf rug ruk rup rur rus ruu saa sac sad sae saf sag sak sap sar sas sau sca scc scd sce scf scg sck scp scr scs scu sda sdc sdd sde sdf sdg sdk sdp sdr sds sdu se- sea sec sed see sef seg sek sep ser ses seu sfa sfc sfd sfe sff sfg sfk sfp sfr sfs sfu sga sgc sgd sge sgf sgg sgk sgp sgr sgs sgu sk- ska skc skd ske skf skg skk skp skr sks sku spa spc spd spe spf spg spk spp spr sps spu sr- sra src srd sre srf srg srk srp srr srs ss- ssa ssc ssd sse ssf ssg ssk ssp ssr sss ssu sua suc sud sue suf sug suk sup sur sus suu ua- uaa uac uad uae uaf uag uak uap uar uas uau uca ucc ucd uce ucf ucg uck ucp ucr ucs ucu uda udc udd ude udf udg udk udp udr uds udu uea uec ued uee uef ueg uep uer ues ufa ufc ufd ufe uff ufg ufp ufr ufs ufu uga ugc uge ugf ugg ugk ugp ugr ugs ugu uka ukc uke ukf ukk ukp ukr uku up- upa upc upd upe upf upg upk upp upr ups upu ur- ura urc urd ure urf urg urk urp urr urs uru usa usc usd use usf usg usk usp usr uss usu uua uuc uue uug uur uus uuu

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