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ldl++(20)> query edge(I,X)
query edge(I,X)
Querying : edge(I,X) ...
(0, (nil, nil, 0))
(1, (a, b, 2))
(2, (c, d, 2))
(3, (b, c, 3))
The number of records is 4.
ldl++(21)>