The solution obtained using Matching Algorithm is 
MATE         1    and         9
MATE         2    and         5
MATE         3    and         4
MATE         4    and         3
MATE         5    and         2
MATE         6    and         7
MATE         7    and         6
MATE         8    and        10
MATE         9    and         1
MATE        10    and         8
MATE        11    and         0


Number of unmatched nodes is ->          1