Rule when penalty not composed of three periods (Art. 65)
Article 65. Rule in cases in which the penalty is not composed of three periods. — In cases in which the penalty prescribed by law is not composed of
three periods, the courts shall apply the rules contained in the foregoing
articles, dividing into three equal portions of time included in the penalty
prescribed, and forming one period of each of the three portions. (Revised Penal Code)