Matching REx "(?:(.)b|.)+" against "ebfg"
   0 <> <ebfg>               |  1:CURLYX[0] {1,32767}(15)
   0 <> <ebfg>               | 14:  WHILEM[1/1](0)
                                    whilem: matched 0 out of 1..32767
   0 <> <ebfg>               |  3:    BRANCH(11)
   0 <> <ebfg>               |  4:      OPEN1(6)
   0 <> <ebfg>               |  6:      REG_ANY(7)
   1 <e> <bfg>               |  7:      CLOSE1(9)
   1 <e> <bfg>               |  9:      EXACTF <b>(14)
   2 <eb> <fg>               | 14:      WHILEM[1/1](0)
                                        whilem: matched 1 out of 1..32767
   2 <eb> <fg>               |  3:        BRANCH(11)
   2 <eb> <fg>               |  4:          OPEN1(6)
   2 <eb> <fg>               |  6:          REG_ANY(7)
   3 <ebf> <g>               |  7:          CLOSE1(9)
   3 <ebf> <g>               |  9:          EXACTF <b>(14)
                                            failed...
   2 <eb> <fg>               | 11:        BRANCH(13)
   2 <eb> <fg>               | 12:          REG_ANY(14)
   3 <ebf> <g>               | 14:          WHILEM[1/1](0)
                                            whilem: matched 2 out of 1..32767