First Attack: 6 Bit Key Deltas:

        0x74, // k0k1 (0)
        0x9C, // k0k2 (1)
        0xF8, // k0k3 (2)
        0x90, // k0k4 (3)

        0x7C, // k0k5 (4)
        0x88, // k0k6 (5)
        0x4C, // k0k7 (6)
        0x58, // k0k8 (7)

        0x54, // k0k9  (8)
        0x9C, // k0k10 (9)
        0xEC, // k0k11 (10)
        0xC8, // k0k12 (11)

        0x44, // k0k13 (12)
        0xE4, // k0k14 (13)
        0x60  // k0k15 (14)

Second Attack
	First round (2^6*2^8): (k0 k5 k10 k15) = (0x89 0xF6 0x15 0xE9)

	Main Key:
   		|  89  |        |       |	  |		|  k0  |  k4  |  k8   | k12 |
  		|        |  F6  |       |	  |		|  k1  |  k5  |  k9   | k13 |
 		|        |        | 15  |	  |	==  	|  k2  |  k6  |  k10 | k14 |
  		|        |        |       | E9 |		|  k3  |  k7  |  k11 | k15 |
	Second round (2^8): (k4 k9 k14 k3)  = (0x1B 0xDE 0x6E 0x71)
	Main Key:

   		|  89  |  1B  |       |	  |		|  k0  |  k4  |  k8   | k12 |
  		|        |  F6  | DE  |	  |		|  k1  |  k5  |  k9   | k13 |
 		|        |        | 15  | 6E |	==  	|  k2  |  k6  |  k10 | k14 |
  		|   71 |        |       | E9 |		|  k3  |  k7  |  k11 | k15 |

	Third round (2^8): (k8 k13 k2 k7)  = (0xD1 0xCC 0x14 0xC6)
	Main Key:
   		|  89   |  1B  | D1  |	     |		|  k0  |  k4  |  k8   | k12 |
  		|         |  F6   | DE  | CC |		|  k1  |  k5  |  k9   | k13 |
 		|   14  |         | 15  | 6E  |	==  	|  k2  |  k6  |  k10 | k14 |
  		|   71  |  C6  |        | E9  |		|  k3  |  k7  |  k11 | k15 |


	Final round (2^8): (k12 k1 k6 k11)  = (0x 0x 0x 0x)
	Main Key:
   		|  89   |  1B  | D1  |	42 |		|  k0  |  k4  |  k8   | k12 |
  		|  FF   |  F6   | DE  | CC |		|  k1  |  k5  |  k9   | k13 |
 		|  14   |  01  |  15  | 6E  |	==  	|  k2  |  k6  |  k10 | k14 |
  		|  71   |  C6  |  66  | E9  |		|  k3  |  k7  |  k11 | k15 |

	Final key: (0x 89 FF 14 71 1B F6 01 C6 D1 DE 15 66 42 CC 6E E9)