nsm nsn nso nsr nss o-i oaa oac oad oae oai oal oam oan oao oar oas oc- oca occ ocd oci ocl ocm ocn oco ocr ocs oda odc odd ode odi odl odm odn odo odr ods oea oec oed oee oei oel oem oen oeo oer oes oia oic oid oie oii oil oim oin oio oir ois ola olc old ole oli oll olm oln olo ols om- oma omc omd ome omi oml omm omn omo omr oms on- ona onc ond one oni onl onn ono onr ons oo- ooa ooc ood ooi ool oom oon ooo oor oos or- ora orc ord ore ori orl orm orn oro orr ors os- osa osc osd ose osi osl osm osn oso osr oss ra- raa rac rad rae rai ral ram ran rao rar ras rca rcc rcd rce rci rcl rcm rcn rco rcr rcs rda rdc rdd rde rdi rdl rdm rdn rdo rdr rds re- rea rec red ree rei rel rem ren reo rer res ria ric rid rie rii ril rim rin rio rir ris rla rlc rld rle rli rll rlm rln rlo rlr rls rma rmc rmd rme rmi rml rmm rmn rmo rmr rms rna rnc rnd rni rnm rnn rno rnr rns roa roc rod roe roi rol rom ron roo ror ros rra rrc rrd rri rrl rrm rrn rrr rrs rsa rsc rsd rse rsi rsl rsm rsn rso rsr rss saa sac sad sae sai sal sam san sao sar sas sca scc scd sce sci scl scm scn sco scr scs sda sdc sdd sde sdi sdl sdm sdn sdo sdr sds se- sea sec sed see sei sel sem sen seo ser ses sia sic sid sie sii sil sim sin sio sir sis sla slc sld sle sli sll slm sln slo slr sls sma smc smd sme smi sml smm smn smo smr sms sna snc snd sne sni snl snm snn sno snr sns soa soc sod soe soi sol som son soo sor sos sr- sra src srd sre sri srl srm srn sro srr srs ss- ssa ssc ssd sse ssi ssl ssm ssn sso ssr sss