Letters that make derivational morphology
a, o, d, e, g, l, n, p, h, m, r, t, i, v, y are letters that make 'derivational morphology'
Words within derivational morphology
ER, log, OR, vat, ology, ti, VA, iva, morphology, VAT, Gy, at, pH, RI, derivational, logy, on, iv, derivation, IV, AL, DE, MO, Io, ion, Al, At, Er, Ho, Mo, Na, Ti, mo, morph are words within 'derivational morphology'