[     0   -1/2   -2/3   -3/4   -4/5   -5/6   -6/7   -7/8   -8/9  -9/10 -10/11 -11/12 -12/13 -13/14 -14/15 -15/16 -16/17 -17/18 -18/19 -19/20 -20/21 -21/22 -22/23 -23/24 -24/25 -25/26 -26/27 -27/28 -28/29 -29/30]
[   1/2      0   -1/4   -2/5   -1/2   -4/7   -5/8   -2/3  -7/10  -8/11   -3/4 -10/13 -11/14   -4/5 -13/16 -14/17   -5/6 -16/19 -17/20   -6/7 -19/22 -20/23   -7/8 -22/25 -23/26   -8/9 -25/28 -26/29  -9/10 -28/31]
[   2/3    1/4      0   -1/6   -2/7   -3/8   -4/9   -1/2  -6/11  -7/12  -8/13  -9/14   -2/3 -11/16 -12/17 -13/18 -14/19   -3/4 -16/21 -17/22 -18/23 -19/24   -4/5 -21/26 -22/27 -23/28 -24/29   -5/6 -26/31 -27/32]
[   3/4    2/5    1/6      0   -1/8   -2/9  -3/10  -4/11  -5/12  -6/13   -1/2  -8/15  -9/16 -10/17 -11/18 -12/19 -13/20   -2/3 -15/22 -16/23 -17/24 -18/25 -19/26 -20/27   -3/4 -22/29 -23/30 -24/31 -25/32 -26/33]
[   4/5    1/2    2/7    1/8      0  -1/10  -2/11   -1/4  -4/13  -5/14   -2/5  -7/16  -8/17   -1/2 -10/19 -11/20   -4/7 -13/22 -14/23   -5/8 -16/25 -17/26   -2/3 -19/28 -20/29  -7/10 -22/31 -23/32  -8/11 -25/34]
[   5/6    4/7    3/8    2/9   1/10      0  -1/12  -2/13  -3/14  -4/15  -5/16  -6/17  -7/18  -8/19  -9/20 -10/21   -1/2 -12/23 -13/24 -14/25 -15/26 -16/27 -17/28 -18/29 -19/30 -20/31 -21/32   -2/3 -23/34 -24/35]
[   6/7    5/8    4/9   3/10   2/11   1/12      0  -1/14  -2/15  -3/16  -4/17  -5/18  -6/19  -7/20  -8/21  -9/22 -10/23 -11/24 -12/25   -1/2 -14/27 -15/28 -16/29 -17/30 -18/31 -19/32 -20/33 -21/34 -22/35 -23/36]
[   7/8    2/3    1/2   4/11    1/4   2/13   1/14      0  -1/16  -2/17   -1/6  -4/19   -1/4   -2/7  -7/22  -8/23   -3/8   -2/5 -11/26   -4/9 -13/28 -14/29   -1/2 -16/31 -17/32  -6/11 -19/34   -4/7  -7/12 -22/37]
[   8/9   7/10   6/11   5/12   4/13   3/14   2/15   1/16      0  -1/18  -2/19  -3/20  -4/21  -5/22  -6/23  -7/24  -8/25  -9/26 -10/27 -11/28 -12/29 -13/30 -14/31 -15/32 -16/33   -1/2 -18/35 -19/36 -20/37 -21/38]
[  9/10   8/11   7/12   6/13   5/14   4/15   3/16   2/17   1/18      0  -1/20  -2/21  -3/22  -4/23  -5/24  -6/25  -7/26  -8/27  -9/28 -10/29 -11/30 -12/31 -13/32 -14/33 -15/34 -16/35 -17/36 -18/37   -1/2 -20/39]
[ 10/11    3/4   8/13    1/2    2/5   5/16   4/17    1/6   2/19   1/20      0  -1/22  -2/23   -1/8  -4/25  -5/26   -2/9   -1/4  -8/29  -3/10 -10/31 -11/32  -4/11 -13/34   -2/5  -5/12 -16/37 -17/38  -6/13 -19/40]
[ 11/12  10/13   9/14   8/15   7/16   6/17   5/18   4/19   3/20   2/21   1/22      0  -1/24  -2/25  -3/26  -4/27  -5/28  -6/29  -7/30  -8/31  -9/32 -10/33 -11/34 -12/35 -13/36 -14/37 -15/38 -16/39 -17/40 -18/41]
[ 12/13  11/14    2/3   9/16   8/17   7/18   6/19    1/4   4/21   3/22   2/23   1/24      0  -1/26  -2/27  -3/28  -4/29   -1/6  -6/31  -7/32  -8/33  -9/34   -2/7 -11/36 -12/37 -13/38 -14/39   -3/8 -16/41 -17/42]
[ 13/14    4/5  11/16  10/17    1/2   8/19   7/20    2/7   5/22   4/23    1/8   2/25   1/26      0  -1/28  -2/29  -1/10  -4/31  -5/32  -2/11  -7/34  -8/35   -1/4 -10/37 -11/38  -4/13 -13/40 -14/41  -5/14 -16/43]
[ 14/15  13/16  12/17  11/18  10/19   9/20   8/21   7/22   6/23   5/24   4/25   3/26   2/27   1/28      0  -1/30  -2/31  -3/32  -4/33  -5/34  -6/35  -7/36  -8/37  -9/38 -10/39 -11/40 -12/41 -13/42 -14/43 -15/44]