Fang mail.
Because in Japan, snakes are hebi.
Because otherwise they'd be lizards.
Engineers (engine ears).
Beekeepers. Because beauty is in the eye of the beeholder.
T. Modern pirates are most likely based in Somalia, and T is the most common consonant in the Somali Latin alphabet.
They picked letters out of a hat: C eh, N eh, D eh.
Fang letters!