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I guess it would be something like this.


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I. 9,9,9,8,8,8,2,7,12 II. 6,6,7,5,7,5,1,3,11 III. 4,8,4,8,4,8,5,3,16 IV. 5,5,5,6,6,6,6,8,7 V. 2,8,1,4,7,2,8,6,1 VI. 9,8,7,5,4,3,3,5,-8 VII. 2,0,2,0,2,0,0 VIII. 3,6,1,2,2,4,0,1,5 I. (9+9+9)-(8+8+8)=3 (8+8+8)-(2+7+12)=3 II. (6+6+7)-(5+7+5)=2 (5+7+5)-(1+3+11)=2 III. (4+8+4)-(8+4+8)=-4 (8+4+8)-(5+3+16)=-4 IV. (5+5+5)-(6+6+6)=-3 (6+6+6)-(6+8+7)=-3 V. (...


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