Letters that make closing curtain
s, a, o, g, l, n, c, r, t, i, u are letters that make 'closing curtain'
Words within closing curtain
curtain, os, OS, si, cur, cl, ng, SI, curt, closing, ain, Tai, in, sin, AI, ai, Ur, IN, Sin, Cl, Cu, In, Os, Si, Ta, sing are words within 'closing curtain'