white grill, reticular pattern of crisscross, zig zag lines. symmetric grid, mesh of lines with camber, arc effect. cells of

amorphous arc asymmetric billow billowy camber cell cells cellular chaos chaotic complex complicated contour crazy crisscross crossed dense doodle draw effect freeform gibberish grid grill grillage hatching intersecting jagged knot lace linear lines matrix mesh messy pattern random reticular reticulate scrawl scribble sketching squiggle stripe symmetric symmetry trace tweak undulate wavy weave web weird white zag zig zigzag