A method is provided, and including operations as below: forming multiple active areas extending in a first direction; forming multiple conductive patterns extending in a second direction different from the first direction and arranged in a first layer above the active areas; forming multiple gates extending parallel to the conductive patterns; and forming a first set of conductive lines extending in the first direction and arranged in three first metal tracks that are in a second layer above the first layer, wherein one of the first set of conductive lines is arranged in a middle track of the three first metal tracks, coupled to one of the gates and overlap a first shallow trench region between two of the active areas.