Letters that make presupposition
s, o, e, n, p, r, t, i, u are letters that make 'presupposition'
Words within presupposition
os, OS, RES, supposition, IT, posit, re, ti, si, PR, sup, PO, sit, SI, position, up, on, Io, ion, Po, Re, Es, Os, Pr, Si, Ti are words within 'presupposition'