Article 108. Cancellation and revocation of conviction 1. Conviction of persons who committed any criminal offense at the age under 18 shall be cancelled and revoked pursuant to Articles 88 to 91 of this Code and subject to the provisions of this Article. 2. The following minors shall be held to have no conviction: (1) minors sentenced to any punishment other than imprisonment, who have fully served their sentence; (2) minors sentenced to imprisonment for a minor or medium grave offense, if they commit no further offense within one year from the date on which they completed to serve their sentence; (3) minors sentenced to imprisonment for a grave offense, if they commit no further offense within three years from the date on which they completed to serve their sentence; (4) minors sentenced to imprisonment for a special grave offense, if they commit no further offense within five years from the date on which they completed to serve their sentence; 3. Preterm revocation of conviction shall be permissible only in respect of a person who has served a sentence of imprisonment imposed for a grave or a special grave offense committed at the age under 18, on such grounds as provided for by paragraph 1 of Article 91 of this Code, after completion of at least one-half of the cancellation period as provided for by paragraph 2 of this Article. SPECIAL PART Chapter I. CRIMES AGAINST NATIONAL SECURITY OF UKRAINE Article 109. Actions aimed at forceful change or overthrow of the constitutional order or take-over of government 1. Actions aimed at forceful change or overthrow of the constitutional order or take-over of government, and also a conspiracy to commit any such actions, shall be punishable by imprisonment for a term of five to ten years. 2. Public appeals to violent change or overthrow of the constitutional order of take-over of government, and also dissemination of materials with any appeals to commit any such actions, shall be punishable by restraint of liberty for a term up to three years, or imprisonment for the same term. 3. Any such actions, as provided for by paragraph 2 of this Article, if committed by a member of public authorities or repeated by any person, or committed by an organized group, or by means of mass media, shall be punishable by restraint of liberty for a term up to five years, or imprisonment for the same term.