There seems to be a lot of confusion with BE.2s: often BE.2cs were converted to later spec but still referred to as BE.2c. Also a lot of supposed BE.2e airframes show up on photos as BE.2c or earlier. I have seen a lot of RFC returns with “Betuee” (BE.2e) but never “Betug” (BE.2g) as above: you live and learn.