100: -1: f: $#: f
1: -1: f: $#: f
0: -1: f: $#: f
-1: -1: a: $#: f
-6: -1: f: $#: f
-7: -1: : $#: e
-11: -1: : $#: a
-12: -1: : $#: 
-99: -1: : $#: