0( 0,6):  0  [i1,i1]   1   2   ( 4, *)  ( 6, *)  0  e
 1( 1,6):  0  [i1,ic]   0   1   ( 4, *)  ( *, *)  0  e
 2( 2,6):  0  [i1,i1]   3   0   ( 5, *)  ( 6, *)  0  e
 3( 3,6):  0  [i1,ic]   2   3   ( 5, *)  ( *, *)  0  e
 4( 4,5):  1  [r1,C+]   4   8   ( 0, 1)  ( *, *)  1  1
 5( 5,5):  1  [r1,C+]   5   9   ( 2, 3)  ( *, *)  1  1
 6( 6,4):  1  [C+,r1]   7   6   ( *, *)  ( 0, 2)  2  2
 7( 7,3):  2  [C-,i2]   6   7   ( *, *)  (10,11)  2  1,2,1
 8( 8,2):  2  [i1,C-]   9   4   (10, *)  ( *, *)  1  2,1,2
 9( 9,2):  2  [i1,C-]   8   5   (10, *)  ( *, *)  1  2,1,2
10(10,0):  3  [r1,r2]  10  11   ( 8, 9)  ( 7, *)  3  2,1,2,1
11(10,1):  3  [rn,r2]  11  10   ( *, *)  ( 7, *)  3  2,1,2,1