The word "specially" was routinely used where "especially" fits better (imo).
The following commands were used, followed by manually proofreading each case.
find . -type f -exec sed 's/Specially/Especially/g' -i'' {} +
find . -type f -exec sed 's/specially/especially/g' -i'' {} +
find . -type f -exec sed 's/eespecially/especially/g' -i'' {} +
find . -type f -exec sed 's/Eespecially/Especially/g' -i'' {} +