Letters that make consecutive operation
s, a, o, e, n, p, c, r, t, i, u, v are letters that make 'consecutive operation'
Words within consecutive operation
ER, opera, Opera, pe, ti, ERA, EC, SEC, ration, at, ratio, SE, ut, cut, consecutive, on, iv, sec, con, operation, IV, rat, RA, CO, Io, ion, Ra, At, Co, Cu, Er, Se, Ti, UT, era are words within 'consecutive operation'