Ключевые слова: abstract, abstract geometric lines, billow, billowy, criss cross, crisscross, dense, density, diagonal, geometric, geometric lines, geometrical, geometry, grate, grating, grid, lattice, line, mesh, oblique, parallel, rotate, rotation, series, skew, slant, slanting, sparse, stripe, thick, thin, tilt, trellis, undulate, wave, wavy, zig zag, zigzag,