0(0,20):  0  [C+,i2,C+]   3   0   3   ( *, *)  ( 1, 2)  ( *, *)  0  e
 1(1,18):  1  [C+,r2,C+]   6   2   4   ( *, *)  ( 0, *)  ( *, *)  1  2
 2(1,19):  1  [C+,r2,C+]   7   1   5   ( *, *)  ( 0, *)  ( *, *)  1  2
 3(2,17):  1  [C-,C+,C-]   0   8   0   ( *, *)  ( *, *)  ( *, *)  0  1,3
 4(3,15):  2  [C+,C+,C-]  11   9   1   ( *, *)  ( *, *)  ( *, *)  1  3,2,1
 5(3,16):  2  [C+,C+,C-]  12  10   2   ( *, *)  ( *, *)  ( *, *)  1  3,2,1
 6(4,13):  2  [C-,C+,C+]   1  13  11   ( *, *)  ( *, *)  ( *, *)  1  1,2,3
 7(4,14):  2  [C-,C+,C+]   2  14  12   ( *, *)  ( *, *)  ( *, *)  1  1,2,3
 8(5,12):  2  [i2,C-,i2]   8   3   8   (13,14)  ( *, *)  ( 9,10)  0  2,1,3,2
 9(6,10):  3  [i2,C-,r2]   9   4  10   (15,16)  ( *, *)  ( 8, *)  1  2,1,3,2,1
10(6,11):  3  [i2,C-,r2]  10   5   9   (18,19)  ( *, *)  ( 8, *)  1  2,1,3,2,1
11(7, 8):  3  [C-,i2,C-]   4  11   6   ( *, *)  (15,17)  ( *, *)  1  1,2,3,2,1
12(7, 9):  3  [C-,i2,C-]   5  12   7   ( *, *)  (19,20)  ( *, *)  1  1,2,3,2,1
13(8, 6):  3  [r2,C-,i2]  14   6  13   ( 8, *)  ( *, *)  (15,18)  1  1,2,1,3,2
14(8, 7):  3  [r2,C-,i2]  13   7  14   ( 8, *)  ( *, *)  (16,19)  1  1,2,1,3,2
15(9, 0):  4  [r2,r2,r2]  16  17  18   ( 9, *)  (11, *)  (13, *)  2  1,2,1,3,2,1
16(9, 1):  4  [r2,rn,r2]  15  16  19   ( 9, *)  ( *, *)  (14, *)  2  1,2,1,3,2,1
17(9, 2):  4  [rn,r2,rn]  17  15  17   ( *, *)  (11, *)  ( *, *)  2  1,2,1,3,2,1
18(9, 3):  4  [r2,rn,r2]  19  18  15   (10, *)  ( *, *)  (13, *)  2  1,2,1,3,2,1
19(9, 4):  4  [r2,r2,r2]  18  20  16   (10, *)  (12, *)  (14, *)  2  1,2,1,3,2,1
20(9, 5):  4  [rn,r2,rn]  20  19  20   ( *, *)  (12, *)  ( *, *)  2  1,2,1,3,2,1