Letters that make first-order correlation
s, a, o, d, e, f, l, n, c, r, t, i are letters that make 'first-order correlation'
Words within first-order correlation
el, ER, OR, lat, correlation, re, la, ti, elation, ELA, IRS, IR, Orr, fir, at, Order, EL, first, on, relation, order, CO, DE, LA, Io, ion, Re, At, Co, Er, Ir, La, Ti are words within 'first-order correlation'