V =
(0:-1)[15:2:2]
(1:-1)[3:4:4]
(2:-1)[7:7:7]
(3:-1)[4:10:10]
(4:-1)[12:1:1]
(5:-1)[8:12:12]
(6:-1)[9:3:3]
(7:-1)[5:9:9]
(8:-1)[14:6:6]
(9:-1)[6:13:13]
(10:-1)[13:14:14]
(11:-1)[2:5:5]
(12:-1)[11:15:15]
(13:-1)[10:8:8]
(14:-1)[1:11:11]
E =
{1,0} (-1)
{4,0} (-1)
{2,1} (-1)
{3,2} (-1)
{5,2} (-1)
{7,4} (-1)
{6,5} (-1)
{9,5} (-1)
{8,7} (-1)
{11,7} (-1)
{9,8} (-1)
{12,8} (-1)
{10,9} (-1)
{13,9} (-1)
{6,3} (-1)
{10,6} (-1)
{14,10} (-1)
{12,11} (-1)
{13,12} (-1)
{14,13} (-1)