iiii iiis iirs iisi iisr iisu inis inni innr inns innu inri inrs inss insu inui inun inus invs iri- irin iris irri irrs irun irus irvs isin isis isri issi issr isss issu isus iuiu iuss ivin ivrs n-ii niir niiu nini nins nirs niru nirv nisi niss nisu niur nivr nnnn nnss nrsv nsin nsis nsnr nssr nsss nuin nunn nuns nuri nurn nurr nurs nuru nurv nusi nuss nusu nvir nvis nvss riin riis rinn riri rirs risi riss risu rius rivs rnin rrrr rrun rsis rsnn rsnr ruin ruis runi runn runs ruri rurs ruru rusi russ rusu ruun ruvi ruvu s-ii s-iv sini sinn sins sinu siri sirr sirs siru sisi siss sisu siui sius sivi snir snns snrs snur snus snvi sris srni srnn srvn ssin ssis ssns ssri ssrs sssi ssss suin suir suis sun- suni sunn suns sunu sur- suri surn surr surs suru surv sus- susi suss susu suus suvi suvs svir svns uirr uni- unii unin unir unis univ unni unns unrs uns- unus urin uris uriu urni urns urri ursi urss ursu urun urur urus usin usis usnr usnu ussr usss ussu usui usun usus uuni uuri uusi uuuu uvis uvri uvvu viii vini vins vinu viri virr viru visi visn viss visu vivi vnir vrin vris vrnn vrsi vsun vuir vvvv