The bibi binary notation encodes shift of bits very interesting ways. Take 1, 2, or 3 (only some of the last two bits set) and shift by two bits and you get a l

The bibi binary notation encodes shift of bits very interesting ways. Take 1, 2, or 3 (only some of the last two bits set) and shift by two bits and you get a left-right mirror image; take 4, 5, shift by one and you get upside-down mirror. I think the notation is awesome.