+/.((?2)(?R)\1)()/B
+------------------------------------------------------------------
+ 0 23 Bra
+ 2 Any
+ 3 13 Once
+ 5 9 CBra 1
+ 8 18 Recurse
+ 10 0 Recurse
+ 12 \1
+ 14 9 Ket
+ 16 13 Ket
+ 18 3 CBra 2
+ 21 3 Ket
+ 23 23 Ket
+ 25 End
+------------------------------------------------------------------
+
+/([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00](*ACCEPT)/
+Failed: missing ) at offset 509
+