by steps
000000 000000
000000
7f7f00 7f7f00
7f7f00
00007f 00007f
00007f
0000ff 0000ff
0000ff
007f00 007f00
007f00
007f7f 007f7f
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7b7f06
007fff 007fff
007fff
00ff00 00ff00
00ff00
00ff7f 00ff7f
00ff7f
787f0c 787f0c
787f0c
00ffff 00ffff
00ffff
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7f007f
758012 758012
758012
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7f7f7f 7f7f7f
7f7f7f
728018 728018
728018
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7f7fff
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7fff7f
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7fffff
6f801e 6f801e
6f801e
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6c8124 6c8124
6c8124
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ff7f00
ff7f7f ff7f7f
ff7f7f
ff7fff ff7fff
ff7fff
69812a 69812a
69812a
ffff00 ffff00
ffff00
ffff7f ffff7f
ffff7f
ffffff ffffff
ffffff
668231 668231
668231