|        in        |       out        |
| 0000000000000000 | 1111111111111111 |
| 1111111111111111 | 0000000000000000 |
| 1010101010101010 | 0101010101010101 |
| 0011110011000011 | 1100001100111100 |
| 0001001000110100 | 1110110111001011 |