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