Letters that make space-time continuum
s, a, o, e, n, p, c, m, t, i, u are letters that make 'space-time continuum'
Words within space-time continuum
spa, PA, space-time, ti, NT, ACE, PAC, AC, nu, Pa, on, ace, CE, con, in, time, space, pace, tin, CO, IN, ME, pa, Ac, Ce, Co, In, Ti, continuum are words within 'space-time continuum'