(square .(average ..(hue-from-rgb ...(gradient ....(vdivide .....(turbulate ......(theta 2.991) [1.9964 -2.4118 2.9489]) .....(alpha ......(hue-from-rgb 0.3985))))) ..(checker [1.7744 0.9021 2.956 0.457] ...(vcos ....(vpow [2.0286 1.4333 -2.1042] .....(gradient ......(height vnoise)))))))