Growth rates as a function of the mode number, n, in logarithmic scale up to n = 50. The first value is n = 1/64 for the left panel and n = 1 for the right panel. Left: growth rate obtained semi-analytically for the perpendicular magnetic field (orange); sheared field with L_s equal to L₀ (red), L₀/2 (violet), L₀/3 (cyan), L₀/4 (lime), L₀/5 (blue), L₀/10 (dark green); and for uniformly rotated magnetic field by 1° (black). Right: growth rate obtained from the simulations P-MM-S (blue), P-WN-S (orange), L1-MM-S (green), L1-WN-S (red).