c 1 = x2
c 2 = y2
c 3 = x1
c 4 = y1
c 5 = x0
c 6 = y0
c 7 = x3
c 8 = y3
p cnf 60 157
-9 1 0
-9 -2 0
-1 2 9 0
-10 -1 0
-10 2 0
1 -2 10 0
-11 -9 0
-11 -10 0
9 10 11 0
-12 3 0
-12 4 0
-3 -4 12 0
-13 5 0
-13 6 0
-5 -6 13 0
-14 -3 0
-14 -4 0
3 4 14 0
-15 13 0
-15 -14 0
-13 14 15 0
-16 -12 0
-16 -15 0
12 15 16 0
-17 -11 0
-17 -16 0
11 16 17 0
-18 11 0
-18 16 0
-11 -16 18 0
-19 -17 0
-19 -18 0
17 18 19 0
-20 3 0
-20 -4 0
-3 4 20 0
-21 -3 0
-21 4 0
3 -4 21 0
-22 -20 0
-22 -21 0
20 21 22 0
-23 13 0
-23 -22 0
-13 22 23 0
-24 -12 0
-24 -23 0
12 23 24 0
-25 -11 0
-25 -24 0
11 24 25 0
-26 11 0
-26 24 0
-11 -24 26 0
-27 -25 0
-27 -26 0
25 26 27 0
-28 19 0
-28 -27 0
-19 27 28 0
-29 -19 0
-29 27 0
19 -27 29 0
-30 -28 0
-30 -29 0
28 29 30 0
-31 7 0
-31 -8 0
-7 8 31 0
-32 -7 0
-32 8 0
7 -8 32 0
-33 -31 0
-33 -32 0
31 32 33 0
-34 1 0
-34 2 0
-1 -2 34 0
-35 -1 0
-35 -2 0
1 2 35 0
-36 -35 0
-36 -16 0
35 16 36 0
-37 -34 0
-37 -36 0
34 36 37 0
-38 -33 0
-38 -37 0
33 37 38 0
-39 33 0
-39 37 0
-33 -37 39 0
-40 -38 0
-40 -39 0
38 39 40 0
-41 -34 0
-41 -25 0
34 25 41 0
-42 -33 0
-42 -41 0
33 41 42 0
-43 33 0
-43 41 0
-33 -41 43 0
-44 -42 0
-44 -43 0
42 43 44 0
-45 40 0
-45 -44 0
-40 44 45 0
-46 -40 0
-46 44 0
40 -44 46 0
-47 -45 0
-47 -46 0
45 46 47 0
-48 30 0
-48 47 0
-30 -47 48 0
-49 7 0
-49 8 0
-7 -8 49 0
-50 -7 0
-50 -8 0
7 8 50 0
-51 34 0
-51 -50 0
-34 50 51 0
-52 -49 0
-52 -51 0
49 51 52 0
-53 -35 0
-53 -50 0
35 50 53 0
-54 -16 0
-54 53 0
16 -53 54 0
-55 52 0
-55 -54 0
-52 54 55 0
-56 -49 0
-56 -42 0
49 42 56 0
-57 -55 0
-57 56 0
55 -56 57 0
-58 55 0
-58 -56 0
-55 56 58 0
-59 -57 0
-59 -58 0
57 58 59 0
-60 48 0
-60 59 0
-48 -59 60 0
-60 0