Union
$$A \cup B =$$
{ advertise, anal, analyze, contextualize, express, genital, identify, latency, learn, localize, oral, phallic }
Symmetric Difference
$$A \ominus B =$$
{ advertise, anal, analyze, contextualize, express, genital, identify, latency, learn, localize, oral, phallic }
Cartesian Product
$$A \times B =$$
{ (advertise, anal),
(advertise, genital),
(advertise, latency),
(advertise, oral),
(advertise, phallic),
(analyze, anal),
(analyze, genital),
(analyze, latency),
(analyze, oral),
(analyze, phallic),
(contextualize, anal),
(contextualize, genital),
(contextualize, latency),
(contextualize, oral),
(contextualize, phallic),
(express, anal),
(express, genital),
(express, latency),
(express, oral),
(express, phallic),
(identify, anal),
(identify, genital),
(identify, latency),
(identify, oral),
(identify, phallic),
(learn, anal),
(learn, genital),
(learn, latency),
(learn, oral),
(learn, phallic),
(localize, anal),
(localize, genital),
(localize, latency),
(localize, oral),
(localize, phallic) }
Psychosexual development