def f(x):print(*x);x[-1]==''or f(['']+[(x[i]+x[i+1])%10if''!=x[i]else''for i in range(len(x)-1)]) for x in ([0],[1, 2],[8, 7],[0, 0],[1, 4, 2],[0, 1, 0],[1, 0, 0, 0],[1, 2, 3, 4],[1, 2, 3, 5, 8],[9, 2, 4, 5, 3, 2, 2]): f(x)