Union
$$A \cup B =$$
{ anagogical, annotate, encode, literal, moral, ponder, read, typological }
Symmetric Difference
$$A \ominus B =$$
{ anagogical, annotate, encode, literal, moral, ponder, read, typological }
Difference
$$A - B =$$
{ anagogical, literal, moral, typological }
Difference
$$B - A =$$
{ annotate, encode, ponder, read }
Cartesian Product
$$A \times B =$$
{ (anagogical, annotate),
(anagogical, encode),
(anagogical, ponder),
(anagogical, read),
(literal, annotate),
(literal, encode),
(literal, ponder),
(literal, read),
(moral, annotate),
(moral, encode),
(moral, ponder),
(moral, read),
(typological, annotate),
(typological, encode),
(typological, ponder),
(typological, read) }
Allegory in the Middle Ages