I've tried 2 digit and 1 digit transposes as well. No luck. So I believe I cut 3/4/5 consecutive digits somewhere and then inserted 3/4/5 other digits.
I haven't tried the math yet, but the feels possible.
Can you make some intelligent assumptions about what you did?
For example:
- Definitly didn't grab digits starting at the very first digit?
- Second?
- Third?
- etc?
- Definitely didn't grab digits ending at the very last digit?
- Second to last?
- Third to last?
- Etc?
- Definitely grabbed consecutive digits?
- Definitely pasted those cut digits consecutively?
- Definitely pasted to the *right* (or definitely to the left?) of the cut?
- Definitely pasted at least 1 digit away from the cut?
- Two digits?
- Three digits?
- etc
Any little detail helps significantly reduce the number of possibilities that need to be checked.