New state at case 3b

B = Free block; A = Address of free block; S = Free size
Allocation available bytes:   68 bytes

B  0: A: 0x0103B160, S:    0, next B: 0x0103B53C; Start block
B  1: A: 0x0103B53C, S:   12, next B: 0x0103B560
B  2: A: 0x0103B560, S:   56, next B: 0x0103B598
B  3: A: 0x0103B598, S:    0, next B: 0x00000000; End of region