Letters that make parenthetical
a, e, l, n, p, c, h, r, t, i are letters that make 'parenthetical'
Words within parenthetical
PA, he, re, ti, NT, IC, He, are, ar, tical, Pa, en, par, pare, het, parenthetic, ic, nth, parent, rent, AL, AR, CA, Re, pa, tic, Al, Ar, Ca, Th, Ti are words within 'parenthetical'