Unscramble OSNRTI

intros nitros

instr intro iortn irons isort nitos nitro noirs noris norit oints ornis riots roins roint roist ronts rosin rosit rosti rotis sinto snirt snort stion tiros torsi trins trios trois trons

inro inst into intr ions iron isnt nist nito nits noir nori nost nots oint onst orts otis rins riot rist rits roin roit ront rost roti rots sion sirt snit snot soir sori sorn sort stir stor tins tiro tons tori torn tors trin trio tron

ins int ion ios irs isn iso ist its nis nit nor nos not ois oni ons ont orn ors ort osi ost rin rio ris rit roi ros rot rti sin sir sit son sot sri str tin tis toi ton tor tos tri trs tsi

in io ir is it ni no nr ns nt oi on or os ot rn ro rs rt si sn so sr st ti tn to tr ts