(0, 0)
(1, 1)
(2, 2)
0 4
1 5
2 6
3 7
(2, 14)
(3, 8)
(4, 2)
(5, 'abc')
(6, -7)
<type 'enumerate'>
<enumerate object>
<enumerate object>
(-3, 4)
{<enumerate object>: 3}
(-2, 8)
(-1, 12)