CONECT    1    2    6    7
CONECT    2    1    3    8
CONECT    3    2    4    9
CONECT    4    3    5   10
CONECT    5    4    6   11
CONECT    6    1    5   12
CONECT    7    1
CONECT    8    2
CONECT    9    3
CONECT   10    4
CONECT   11    5
CONECT   12    6
CONECT   13   14   17   18
CONECT   14   13   15   19
CONECT   15   14   16   20
CONECT   16   15   21   22
CONECT   17   13
CONECT   18   13
CONECT   19   14
CONECT   20   15
CONECT   21   16
CONECT   22   16
