Jim Tinsley, PG Whitewasher and DP charter member, created a program (GPL) called jeebies to detect common stealth scanno pairs in e-texts. Right now the program only deals with "he/be" pairs, but can be expanded to other pairs.
Note: Distributed Proofreaders also provides an online version of Jeebies, rewritten in Python and renamed ppjeeb. It is available on our Post-Processing Workbench as part of the PPtext tool.
Jeebies checks for "he/be" errors in a PG English-language text.
Usage is: jeebies [-p] [-t] [-e] filename where -p = Paranoid (many likely false positives). -t = Tolerant (fewer likely false positives). -e = does not Echo the text lines queried.