0(0,10):   1   0    ( 2, *)  ( 3, 4)    [i1,i2]  0  
 1(1,10):   0   1    ( 2, *)  ( *, *)    [i1,ic]  0  
 2(2, 7):   2   7    ( *, *)  ( *, *)    [r1,C+]  1  1
 3(3, 8):   5   4    ( *, *)  ( *, *)    [C+,r2]  1  2
 4(3, 9):   6   3    ( *, *)  ( *, *)    [C+,r2]  1  2
 5(4, 4):   3   5    ( *, *)  ( 8,10)    [C-,i2]  2  121
 6(4, 5):   4   6    ( *, *)  ( 9,11)    [C-,i2]  2  121
 7(5, 6):   7   2    ( 8, 9)  ( *, *)    [i2,C-]  2  212
 8(6, 0):   9  10    ( *, *)  ( *, *)    [r2,r2]  3  2121
 9(6, 1):   8  11    ( *, *)  ( *, *)    [r2,r2]  3  2121
10(6, 2):  10   8    ( *, *)  ( *, *)    [rn,r2]  3  2121
11(6, 3):  11   9    ( *, *)  ( *, *)    [rn,r2]  3  2121