Union
$$A \cup B =$$
{ climax, confrontation, exposition, fall, resolution, rise, setup }
Symmetric Difference
$$A \ominus B =$$
{ climax, confrontation, exposition, fall, rise, setup }
Difference
$$A - B =$$
{ climax, exposition, fall, rise }
Cartesian Product
$$A \times B =$$
{ (climax, confrontation),
(climax, resolution),
(climax, setup),
(exposition, confrontation),
(exposition, resolution),
(exposition, setup),
(fall, confrontation),
(fall, resolution),
(fall, setup),
(resolution, confrontation),
(resolution, resolution),
(resolution, setup),
(rise, confrontation),
(rise, resolution),
(rise, setup) }