Union
$$A \cup B =$$
{ be, do, exist, feel, love, question, read, recite, review, say, see, survey, think }
Symmetric Difference
$$A \ominus B =$$
{ be, do, exist, feel, love, question, read, recite, review, say, see, survey, think }
Cartesian Product
$$A \times B =$$
{ (question, be),
(question, do),
(question, exist),
(question, feel),
(question, love),
(question, say),
(question, see),
(question, think),
(read, be),
(read, do),
(read, exist),
(read, feel),
(read, love),
(read, say),
(read, see),
(read, think),
(recite, be),
(recite, do),
(recite, exist),
(recite, feel),
(recite, love),
(recite, say),
(recite, see),
(recite, think),
(review, be),
(review, do),
(review, exist),
(review, feel),
(review, love),
(review, say),
(review, see),
(review, think),
(survey, be),
(survey, do),
(survey, exist),
(survey, feel),
(survey, love),
(survey, say),
(survey, see),
(survey, think) }
SQ3R