Venn diagrams of common operations on sets.
v ɛ n WORD_BOUNDARY d aɪ ə ɡ ɹ æ m z WORD_BOUNDARY ʌ v WORD_BOUNDARY k ɑ m ə n WORD_BOUNDARY ɑ p ə ɹ ɹ eɪ ʃ ə n z WORD_BOUNDARY ɔ n WORD_BOUNDARY s ɛ t s WORD_BOUNDARY