offset 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F
------------------------------------------------------
0000:  21 00 1d 1d 1d 1d 1d 1d 1d 1d 1d 00 00 01 01 01
0010:  01 01 b4 0f dc 14 b4 0f dc 14 b4 0f dc 14 f0 0f
0020:  a0 14 b4 0f dc 14 01 01 00 00 00 00 00 00