oes oga ogc ogd oge ogg ogi ogo ogs oia oic oid oie oii oik oim oio oir ois oka okc okd oke okg oki okk oko okr oks om- oma omc omd ome omg omi omm omo omr oms oo- ooa ooc ood oog ooi ook oom ooo oor oos or- ora orc ord ore org ori ork orm oro orr ors os- osa osc osd ose osg osi osk osm oso osr oss ra- raa rac rad rae rag rai rak ram rao rar ras rca rcc rcd rce rcg rci rcm rco rcr rcs rda rdc rdd rde rdg rdi rdm rdo rdr rds re- rea rec red ree reg rei rek rem reo rer res rga rgc rgd rge rgg rgi rgk rgo rgr rgs ria ric rid rie rig rii rik rim rio rir ris rkc rke rkg rkk rkm rko rks rma rmc rmd rme rmg rmi rmm rmo rmr rms roa roc rod roe rog roi rok rom roo ror ros rra rrc rrd rrg rri rrk rrm rrr rrs rsa rsc rsd rse rsg rsi rsk rsm rso rsr rss saa sac sad sae sag sai sak sam sao sar sas sca scc scd sce scg sci sck scm sco scr scs sda sdc sdd sde sdg sdi sdk sdm sdo sdr sds se- sea sec sed see seg sei sek sem seo ser ses sga sgc sgd sge sgg sgi sgk sgm sgo sgr sgs sia sic sid sie sig sii sik sim sio sir sis sk- ska skc skd ske skg ski skk skm sko skr sks sma smc smd sme smg smi smk smm smo smr sms soa soc sod soe sog soi sok som soo sor sos sr- sra src srd sre srg sri srk srm sro srr srs ss- ssa ssc ssd sse ssg ssi ssk ssm sso ssr sss