Two alanines are replaced by prolines.

A trim-middled hog will have a higher dressing percentage than a wasty, gutty, paunchy, heavy-middled hog.

Here, before a feast that would prick the dead with appetite, were shapes of beasts with heads of men, asses, elephants, bulls, horses, swine, foxes, riverhorses, dromedaries; […]

How the fug does a thug like you know about any preacher?