Article 18 A penalty of confinement shall be to place the convict in one of the central or general jails for the period he is sentenced to. This period may not be less than 24 hours and not more than three years except in the special cases prescribed in the law. All convict who is sentenced to light confinement for a period not exceeding three months may request to be employed outside the jail instead of executing the confinement penalty, according to the restrictions prescribed in the Felonies Investigation Law, unless the sentence rules that he be deprived of that choice. Article 19 The penalty of confinement shall be two kinds: Light Confinement Penal Servitude Convicts who are sentenced to penal servitude shall work inside or outside the jails in works to be determined by the government. Article 20 Te judge shall pass a judgement of penal servitude whenever the penalty period sentence is for one year or more, and also in the other cases determined by the law. In all other cases, a light confinement sentence or penal servitude may he ruled. Article 21 The period of custodial penalties shall begin from the day the convict is detained according to a ruling mandatory executable, subject to reducing the period by the duration of the preventive detention Article 22 A fine penalty shall be to force the convict to pay to the treasury of the government the amount estimated in the court sentence.