oir ois oka okd oke oki okk oko okr oks om- oma omd ome omh omi omm omn omo omr oms on- ona ond one onh oni onk onn ono onr ons oo- ooa ood ooh ooi ook oom oon ooo oor oos or- ora ord ore orh ori ork orm orn oro orr ors os- osa osd ose osh osi osk osm osn oso osr oss ra- raa rad rae rah rai rak ram ran rao rar ras rda rdd rde rdh rdi rdm rdn rdo rdr rds re- rea red ree reh rei rek rem ren reo rer res rh- rha rhd rhe rhh rhi rhm rhn rho rhr rhs ria rid rie rih rii rik rim rin rio rir ris rke rkk rkm rko rks rma rmd rme rmh rmi rmm rmn rmo rmr rms rna rnd rnh rni rnm rnn rno rnr rns roa rod roe roh roi rok rom ron roo ror ros rra rrd rrh rri rrk rrm rrn rrr rrs rsa rsd rse rsh rsi rsk rsm rsn rso rsr rss saa sad sae sah sai sak sam san sao sar sas sda sdd sde sdh sdi sdk sdm sdn sdo sdr sds se- sea sed see seh sei sek sem sen seo ser ses sh- sha shd she shh shi shk shm shn sho shr shs sia sid sie sih sii sik sim sin sio sir sis sk- ska skd ske skh ski skk skm sko skr sks sma smd sme smh smi smk smm smn smo smr sms sna snd sne sni snk snm snn sno snr sns soa sod soe soh soi sok som son soo sor sos sr- sra srd sre srh sri srk srm srn sro srr srs ss- ssa ssd sse ssh ssi ssk ssm ssn sso ssr sss