regex input expected actual bug?
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(^) 12345 x12345 x12345
($) 12345 12345x 12345x
(^)|($) 12345 x12345x x12345x
($)|(^) 12345 x12345x x12345x
2 12345 1x345 1x345
(^)|2 12345 x1x345 x1x345
2|(^) 12345 x1x345 x1x345
($)|2 12345 1x345x 1x345x
2|($) 12345 1x345x 1x345x
(2)|(^) 12345 x1x345 x1x345
(^)|(2) 12345 x1x345 x1x345
(2)|($) 12345 1x345x 1x345x
($)|(2) 12345 1x345x 1x345x
((2)|(^)). 12345 xx45 xx45
((^)|(2)). 12345 xx45 xx45
.((2)|($)) 12345 x34x x34x
.(($)|(2)) 12345 x34x x34x
(^)|6 12345 x12345 x12345
6|(^) 12345 x12345 x12345
($)|6 12345 12345x 12345x
6|($) 12345 12345x 12345x
2|6|(^) 12345 x1x345 x1x345
2|(^)|6 12345 x1x345 x1x345
6|2|(^) 12345 x1x345 x1x345
6|(^)|2 12345 x1x345 x1x345
(^)|6|2 12345 x1x345 x1x345
(^)|2|6 12345 x1x345 x1x345
2|6|($) 12345 1x345x 1x345x
2|($)|6 12345 1x345x 1x345x
6|2|($) 12345 1x345x 1x345x
6|($)|2 12345 1x345x 1x345x
($)|6|2 12345 1x345x 1x345x
($)|2|6 12345 1x345x 1x345x
2|4|(^) 12345 x1x3x5 x1x3x5
2|(^)|4 12345 x1x3x5 x1x3x5
4|2|(^) 12345 x1x3x5 x1x3x5
4|(^)|2 12345 x1x3x5 x1x3x5
(^)|4|2 12345 x1x3x5 x1x3x5
(^)|2|4 12345 x1x3x5 x1x3x5
2|4|($) 12345 1x3x5x 1x3x5x
2|($)|4 12345 1x3x5x 1x3x5x
4|2|($) 12345 1x3x5x 1x3x5x
4|($)|2 12345 1x3x5x 1x3x5x
($)|4|2 12345 1x3x5x 1x3x5x
($)|2|4 12345 1x3x5x 1x3x5x
x{0}((2)|(^)) 12345 x1x345 x1x345
x{0}((^)|(2)) 12345 x1x345 x1x345
x{0}((2)|($)) 12345 1x345x 1x345x
x{0}(($)|(2)) 12345 1x345x 1x345x
x*((2)|(^)) 12345 x1x345 x1x345
x*((^)|(2)) 12345 x1x345 x1x345
x*((2)|($)) 12345 1x345x 1x345x
x*(($)|(2)) 12345 1x345x 1x345x
x{0}^ 12345 x12345 x12345
x{0}$ 12345 12345x 12345x
(x{0}^)|2 12345 x1x345 x1x345
(x{0}$)|2 12345 1x345x 1x345x