Try saying the alphabet backwards as fast as you can. Z, Y, X, W, V, U, T, S, R, Q, P, O, N, M, L, K, J, I, H, G, F, E, D, C, B, A, like that.

把字母表倒过来说，Z、 Y、X、W、V、U、T、S、R、Q、P、O、N、M、L、K、J、I、H、G、F、E、D、C、B、A，就这样。