ono onr ons oo- ooa ood oof oog ooi ook oom oon ooo oor oos or- ora ord orf org ori ork orm orn oro orr ors os- osa osd osf osg osi osk osm osn oso osr oss ra- raa rad raf rag rai rak ram ran rao rar ras rda rdd rdf rdg rdi rdm rdn rdo rdr rds rfa rfd rff rfg rfi rfk rfm rfn rfo rfr rfs rga rgd rgf rgg rgi rgk rgn rgo rgr rgs ria rid rif rig rii rik rim rin rio rir ris rkf rkg rkk rkm rko rks rma rmd rmf rmg rmi rmm rmn rmo rmr rms rna rnd rng rni rnm rnn rno rnr rns roa rod rof rog roi rok rom ron roo ror ros rra rrd rrf rrg rri rrk rrm rrn rrr rrs rsa rsd rsf rsg rsi rsk rsm rsn rso rsr rss saa sad saf sag sai sak sam san sao sar sas sda sdd sdf sdg sdi sdk sdm sdn sdo sdr sds sfa sfd sff sfg sfi sfk sfm sfn sfo sfr sfs sga sgd sgf sgg sgi sgk sgm sgn sgo sgr sgs sia sid sif sig sii sik sim sin sio sir sis sk- ska skd skf skg ski skk skm sko skr sks sma smd smf smg smi smk smm smn smo smr sms sna snd snf sng sni snk snm snn sno snr sns soa sod sof sog soi sok som son soo sor sos sr- sra srd srf srg sri srk srm srn sro srr srs ss- ssa ssd ssf ssg ssi ssk ssm ssn sso ssr sss