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