def makePairs(pairs):
    j = 1
    pairs += [[0] * i + [j] for i in range(M)]
    j = 1
    pairs += [[1]  + [0] * i + [j] for i in range(M-1)]

    for m in range(2,10):
        pairs += [[m]]
        pairs += [[m] + [0]*i + [1] for i in range(M-1)]
        pairs += [[0]+[0]*i + [m] for i in range(M-1)]