001+ Could not open input file: Array
001- Outer function increments $v to 1
002- Inner function reckons $v is 1
003- Outer function increments $v to 2
004- Inner function reckons $v is 2
005- Outer function increments $v to 1
006- Inner function reckons $v is 0
007- Outer function increments $v to 2
008- Inner function reckons $v is 1
009- Outer function catenates 'b' onto $v to give b
010- Outer function catenates 'a' onto $v to give ba
011- Inner function reckons $v is b
012- Outer function catenates 'b' onto $v to give bab
013- Outer function catenates 'a' onto $v to give baba
014- Inner function reckons $v is bab