A method of feedforward phase recovery on a data stream is described. In the illustrated and described embodiment, objects or patterns comprising faces are detected. The user is able to specify input regarding any permitted version modifications for the modules listed. Central land portion row chamfer portions 24 are formed at obtuse angle portions of the central land portion row 18. A second, stationary scrub brush, mounted at an angle in relation to the first scrub brush, is positioned on the lower surface of the implement to allow the user the option to use the scrub brush implement as a manual scrub brush as well, by applying pressure on the handle section of the implement to clean ingrained soiled surfaces.