true
0: ------10---2--------6--5------11---9----8---7-----------1--3----------4-
1: --7--2-------4-9--------3--5-----------11-6------------0-10----8---*****
2: -4---1----0------8--------3---5-------------11-6------7-9----10----*****
3: --------------7-4-------1-2----8-----10--5----9-----------0----6----11--
4: -2------6----1--3---------------7--5-----------8----10------11---9----0-
5: ---9-----7--6---------0----1--2----4----3-------11--8--------------10---
6: 11-------4---5------0-10------9------------1----2-----------7---3--8----
7: --1------5----3---10----8--------4---9-----0----------2----6-----11*****
8: ----10--11---9-----2-----7-------3------0--------4---5---------1---6----
9: ---5-------8---1------------6----0--7------10-3----11----2-------4-*****
10: ----8-0-----------7--6------------11--3-----9--------4---1---2-----5---
11: 6------8---------------------0----10----1----2---5-9--------4----7--3--
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(0,2) (8,9) (5,6) (1,4) (3,7) 
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(2,5) (3,8) (4,7) (0,9) (10,11) 
(4,5) (7,9) (3,10) (0,8) (1,11) 
(3,5) (1,6) (0,7) (9,10) (2,11) 
(3,9) (2,6) (4,8) (5,11) 
(9,11) (5,8) (4,10) (2,7) (0,1) 
(2,9) (1,10) (0,3) (6,7) (4,11) 
(2,10) (1,8) (3,6) (4,9) (7,11) 
(6,8) (5,10) (3,11) (0,4) 
nodes: 6540   cpu: 145521