Letters that make unary operation
a, o, e, n, p, r, t, i, u, y are letters that make 'unary operation'
Words within unary operation
ER, opera, Opera, pe, ti, ERA, UN, ration, ar, at, ratio, on, unary, operation, rat, RA, AR, Io, ion, Ra, Ar, At, Er, Na, Ti, era are words within 'unary operation'