Letters that make simple closed curve
s, o, d, e, l, p, c, m, r, i, u, v are letters that make 'simple closed curve'
Words within simple closed curve
RV, os, OS, si, cur, MP, cl, SE, closed curve, SI, ED, close, simple, closed, curve, Ur, imp, LE, Cl, Cu, Os, Se, Si, lose are words within 'simple closed curve'