Draw the Hasse diagram for divisibility on the set

Draw the Hasse diagram for divisibility on the set

a) {1, 2, 3, 4, 5, 6}.
b) {3, 5, 7, 11, 13, 16, 17}.
c) {2, 3, 5, 10, 11, 15, 25}.
d) {1, 3, 9, 27, 81, 243}.