{'tributary': [0, 0, 0, 3], 'river': [4, 0, 1, 2], 'ganga': [11, 1, 3, 3], 'above pairs': [0, 0, 3, 4], 'brahmaputra': [3, 0, 0, 0], 'barak': [0, 0, 1, 0], 'godavari': [0, 0, 0, 1], 'musi': [0, 0, 0, 2]}