Same as Fig. 5 but for the SYM-2SIN (top panels) and SYM-3SIN (bottom panels) initial conditions and the fact that there are no blue or green curves, because our analytical recipes apply only to shell crossing occurring along one direction. Only the x component of the force is shown in Fig. 7 due to the symmetric nature of the system. In addition, the 15LPT prediction from Eq. (14) is shown as a dashed light orange curve in the 2D case.