Canadian constitutional scholar Peter Hogg identified several rights provided in various sections of the "Act" that he termed the "small bill of rights": section 50 limits the duration of a House of Commons of Canada to a maximum of five years; sections 51 and 52 require readjustment of seats in the House of Commons following each census to guarantee proportionate representation of all provinces; section 86 requires Parliament and all legislatures sit at least once per year; section 93 provides, notwithstanding provincial jurisdiction over education in Canada, the right to separate schools for either Protestant or Catholic minorities; section 99 establishes a right for judges to serve during good behaviour unless removed by the governor general under advice from Parliament; section 121 prohibits customs duties and tariffs on inter-provincial trade; section 125 exempts governments in Canada from paying most taxes; and section 133 provides for bilingualism in the legislative and judicial branches of the federal and Quebec governments (see below).