A wireless communication system is provided that spreads pilot signals, or channel state information reference signals, using a spreading code chosen from a set of mutually unbiased bases. In addition, the method comprises sealing a first formation from a second formation, shutting in the annulus, and closing off an inner flow passage of a tubing string. Atop cover is disposed on a top side of the cooking base for covering the cooking base. Pressure applied on the first perforated line tears apart material to produce a third aperture in continuation of the first aperture and the second aperture. The personal assistant logic may retrieve media representation that correspond to the reaction from a store on the device, or the application may retrieve the media representation from the Web service.