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Compiling REx `(un-.*)\@(.*)'
size 17 Got 140 bytes for offset annotations.
...

EXECUTING...
[snip]

first at 3
rarest char @ at 0
rarest char - at 2

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```
   1: OPEN1(3)
[...]
  17: END(0)
```
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anchored `un-' at 0 floating `@' at 3..2147483647 (checking anchored) minlen 4

  anchored `n-' at 1 floating `@' at 3..2147483647 (checking anchored)
+ stclass `ANYOF[Uu]' minlen 4

Offsets: [17]
        1[1] 0[0] 2[3] 0[0] 6[1] 5[1] 7[1] 0[0] 8[135549512] 0[0] 10[1
+] 0[0] 12[
+1] 11[1] 13[1] 0[0] 14[0]