called with [10, 10, 6, 2, 10]
called with [10, 10]
called with [10]
called with [10]
returning [10, 10] 0
called with [6, 2, 10]
called with [6]
called with [2, 10]
called with [2]
called with [10]
returning [2, 10] 0
returning [2, 6, 10] 1
returning [2, 6, 10, 10, 10] 5
5