V =
(0:-1)[8:0:0]
(1:-1)[13:18:18]
(2:-1)[41:28:28]
(3:-1)[32:3:3]
(4:-1)[0:26:26]
(5:-1)[40:8:8]
(6:-1)[0:41:41]
(7:-1)[30:0:0]
(8:-1)[17:6:6]
(9:-1)[35:24:24]
(10:-1)[22:12:12]
(11:-1)[36:35:35]
(12:-1)[14:2:2]
(13:-1)[16:17:17]
(14:-1)[26:11:11]
(15:-1)[33:19:19]
(16:-1)[4:0:0]
(17:-1)[5:37:37]
(18:-1)[0:7:7]
(19:-1)[21:5:5]
(20:-1)[28:32:32]
(21:-1)[19:38:38]
(22:-1)[27:0:0]
(23:-1)[18:33:33]
(24:-1)[20:25:25]
(25:-1)[31:30:30]
(26:-1)[12:27:27]
(27:-1)[10:39:39]
(28:-1)[0:21:21]
(29:-1)[11:0:0]
(30:-1)[0:36:36]
(31:-1)[2:14:14]
(32:-1)[3:1:1]
(33:-1)[38:0:0]
(34:-1)[15:10:10]
(35:-1)[29:4:4]
(36:-1)[0:16:16]
(37:-1)[0:13:13]
(38:-1)[37:0:0]
(39:-1)[25:31:31]
(40:-1)[39:23:23]
(41:-1)[6:9:9]
(42:-1)[23:29:29]
(43:-1)[34:20:20]
(44:-1)[0:0:0]
(45:-1)[9:0:0]
(46:-1)[24:22:22]
(47:-1)[7:40:40]
(48:-1)[0:0:0]
(49:-1)[1:34:34]
(50:-1)[0:15:15]
E =
{1,0} (-1)
{7,0} (-1)
{2,1} (-1)
{8,1} (-1)
{3,2} (-1)
{9,2} (-1)
{4,3} (-1)
{10,3} (-1)
{11,4} (-1)
{6,5} (-1)
{13,5} (-1)
{8,7} (-1)
{15,7} (-1)
{9,8} (-1)
{16,8} (-1)
{10,9} (-1)
{11,10} (-1)
{17,10} (-1)
{12,11} (-1)
{13,12} (-1)
{18,12} (-1)
{14,13} (-1)
{16,15} (-1)
{20,16} (-1)
{22,18} (-1)
{26,20} (-1)
{22,21} (-1)
{29,21} (-1)
{23,22} (-1)
{30,22} (-1)
{24,23} (-1)
{31,23} (-1)
{26,25} (-1)
{33,25} (-1)
{27,26} (-1)
{34,26} (-1)
{28,27} (-1)
{35,27} (-1)
{29,28} (-1)
{36,28} (-1)
{30,29} (-1)
{37,29} (-1)
{31,30} (-1)
{38,30} (-1)
{32,31} (-1)
{39,31} (-1)
{34,33} (-1)
{35,34} (-1)
{41,34} (-1)
{36,35} (-1)
{42,35} (-1)
{37,36} (-1)
{38,37} (-1)
{39,38} (-1)
{43,38} (-1)
{40,39} (-1)
{44,39} (-1)
{42,41} (-1)
{46,42} (-1)
{44,43} (-1)
{48,43} (-1)
{45,44} (-1)
{49,44} (-1)
{14,6} (-1)
{19,14} (-1)
{24,19} (-1)
{32,24} (-1)
{40,32} (-1)
{45,40} (-1)
{50,45} (-1)
{48,47} (-1)
{49,48} (-1)
{50,49} (-1)