M12:=[
    [ <1, 8>, <2, -20>, <3, -24>, <4, 8>, <6, 60>, <12, -24> ],
    [ <1, 4>, <2, -10>, <3, -20>, <4, 4>, <6, 50>, <12, -20> ],
    [ <1, -4>, <2, 10>, <3, -12>, <4, -4>, <6, 30>, <12, -12> ],
    [ <1, 0>, <2, 4>, <3, 0>, <4, -8>, <6, -12>, <12, 24> ],
    [ <1, 0>, <2, 2>, <3, 0>, <4, -4>, <6, -10>, <12, 20> ],
    [ <1, 0>, <2, 0>, <3, -16>, <4, 0>, <6, 40>, <12, -16> ],
    [ <1, 0>, <2, -4>, <3, 0>, <4, 8>, <6, -4>, <12, 8> ],
    [ <1, 0>, <2, 0>, <3, 0>, <4, 0>, <6, -8>, <12, 16> ],
    [ <1, 0>, <2, -2>, <3, 0>, <4, 4>, <6, -6>, <12, 12> ]
];

