Stairs

Goal: 1xA + 3xB + 6xC + 6xD + 3xE + 3xF + 3xG + 3xH
Size: 12x12x12
Move: 72 (4.2.2.2.3.3.3.2.4.2.2.2.3.3.3.3.3.4.2.2.2.3.3.2.3.2.3)