Reference:General Patterns

Many patterns can be used in textures, normals and media. These patterns are agate, boxed, bozo, brick, bumps, cubic, cylindrical, density_file, dents, facets, fractal, function, gradient, granite, hexagon, leopard, marble, onion, pavement, pigment_pattern, planar, quilted, radial, ripples, spherical, spiral1, spiral2, spotted, square, tiling, waves, wood, and wrinkles.