Letters that make secondary winding
s, a, o, d, e, g, n, c, r, i, w, y are letters that make 'secondary winding'
Words within secondary winding
ding, win, EC, SEC, DA, ar, ng, SE, WI, secondary, second, on, winding, sec, con, in, wind, din, AR, CO, IN, ND, Ar, Co, In, Nd, Se are words within 'secondary winding'