Before revision: Universalizing a maxim (statement) leads to it being valid, or to one of two contradictions—a contradiction in conception (where the maxim, when universalized, is no longer a viable means to the end) or a contradiction in will (where the will of a person contradicts what the universalization of the maxim implies).
After revision: Universalizing a maxim (statement) leads to it being valid, or to one of two contradictions—a contradiction in conception (where the maxim, when universalized, is no longer a viable means to the end) or a contradiction in will (where the will of a person contradicts what the universalisation of the maxim implies).