Use 2, 1, 6 and 8 to form different three digit numbers, and arrange them in the order from small to large

Use 2, 1, 6 and 8 to form different three digit numbers, and arrange them in the order from small to large


126,128,162,168,182,186
216,218,261,268,281,286,
612,618,621,628,681,682
812,816,821,826,861,862