iiii iiis iiit iirs iisi iisr iist iitr iitt iri- iris irri irrs irti irts irvs isis isit isri issi issr isss isti istr ists itis itri itrs itsi ivrs riis riri rirs risi riss rist riti rits ritt rivs rrrr rsis rsts rtss rtts rtvi s-ii s-iv s-vt siit siri sirr sirs sirt sisi siss sist sit- siti sits sitt sivi sris srtr srtv ssis ssit ssri ssrs sssi ssss ssts st-v stir stis stit stri strs stsi stss sttr stvs svir svit svtr tiit tiri tirr tirs tisi tiss tist titi tits titt tivi tri- tris trit trsi trst trtr trvs tsis tsiv tssi tssr tsst tsts tsvi ttss tttt tvis tvri tvrr tvss tvtv viii viri virr virt visi viss vist viti vitt vivi vris vrsi vt-i vtrs vvvv