Letters that make preposition
s, o, e, n, p, r, t, i are letters that make 'preposition'
Words within preposition
rep, os, OS, IT, epos, posit, re, ti, si, PR, PO, sit, reposit, SI, position, on, reposition, prep, Io, ion, Po, Re, Os, Pr, Si, Ti are words within 'preposition'