recurse, 110 bytes

Result

WA

Code [DL]

$.........................
.  v{m}2{a}s}3{<vs}2{]%<.
>0{>[{?{5}r    @>}}s{% @1%$
.           #%9<       >0%$
$

stdin

00001010
01001000
01011011
10111010
01000100
10011001
00110111
01000011
01010110
10001000
00101101
10100010
01111000
10111101
00000110
01000101
00000011
10000101
10111110
00010101
00001011
01110100
10000001
00011100
00111000
00010010
11010010
11100111
11010100
00010001
01101001
01000010
11101001
00001111
00101101
00000001
00100100
00011110
01001110
11010101
00110001
11111101
01111000
11110111
01110000
10101011
10110111
00001110
00000000
10010100

stdout

stderr

Traceback (most recent call last):
  File "/home/esolang/interpreters/recurse.py", line 217, in <module>
    pp = Recurse( ff )
  File "/home/esolang/interpreters/recurse.py", line 48, in __init__
    funcName, funcLines
  File "/home/esolang/interpreters/recurse.py", line 21, in __init__
    assert self.rightEntry != None
AssertionError

strace