Convert the following into set-builder notation.

(a) {2, 1, 0, 1, 2}

(b) {..., 6, 4, 2, 0, 2, 4, 6,...}

(c) {...,(3, 9), (2, 4), (1, 1), (0, 0), (1, 1), (2, 4), (3, 9), . . .}

(d) {5, 6, 7, 8, 9, 10,...}

(e) {Monday, Tuesday, Wednesday, Thursday, Friday}