A method of manufacturing an integrated circuit includes identifying a first cell of a layout, placing a first pair of conductive patterns on a first set of routing tracks, placing a second pair of conductive patterns on a second set of routing tracks, and forming, by a first mask, a first set of conductive structures based on the first pair or second pair of conductive patterns. The first cell abuts a second cell. The first cell has a first set of routing tracks. The second cell has a second set of routing tracks. The first and second cell have a same cell height that is a non-integer multiple of a minimum pitch. A top and bottom boundary of the first cell overlaps a pair of the first set of routing tracks. A top and bottom boundary of the second cell overlaps a pair of the second set of routing tracks.