Monk bond may however take any of a number of arrangements for course staggering. The disposal of bricks in these often highly irregular raking patterns can be a challenging task for the bricklayer to correctly maintain while constructing a wall whose courses are partially obscured by scaffold, and interrupted by door or window openings, or other bond-disrupting obstacles. If the bricklayer frequently stops to check that bricks are correctly arranged, then masonry in a raking monk bond can be expensive to build.