1 a: 2 ba b1 3 ba b1 4 .space 32767-4 5 b1: 6 ba b2 7 ba b2 8 .space 127*2-2 9 b2: 10 .space 128*2 11 ba b2 12 ba b2 13 b3: 14 .space 32768 15 ba b3 16 ba b3 17 b4: 18