The term 'crossword pattern' refers to the arrangement of black and white squares that form a crossword puzzle. The GRID is the most basic element of a crossword puzzle, as it provides the framework for the clues and answers. The GRID typically consists of a square or rectangular array of white and black squares, with the black squares forming the words and phrases that are to be filled in. The GRID also serves to separate the words and phrases from each other, making it easier for the solver to identify them.