0 +-------------------------------+---------------+-------+---+ | | | | | 16 8 4 2 1 +---------------+-------+---+ +-------+---+ +---+ 3 | | | | | | | | | 24 20 18 17 12 10 9 6 5 +-------+---+ +---+ 19 +---+ 11 7 | | | | | | | 28 26 25 22 21 14 13 +---+ 27 23 15 | | 30 29 31 Figure 1