Letters that make parallel interface
a, e, f, l, n, p, c, r, t, i are letters that make 'parallel interface'
Words within parallel interface
el, ER, interface, PA, RF, fa, te, NT, ACE, face, para, AC, ar, Pa, par, inter, EL, Ara, all, parallel, ace, CE, in, RA, Para, AL, AR, IN, Ra, pa, LE, Ac, Al, Ar, Ce, Er, In, Rf, Te are words within 'parallel interface'