1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
next next (1), (2), (3) next 1 next 1, 2, 3 next 1, 2, 3 next [1, 2, 3] next( 1 2 ) next 1 next() next(1)