00101000000000100000000000000000   0. -20 to c
11001000000000010000000000000000   1. Sub. 19
10101000000001100000000000000000   2. c to 21
10101000000000100000000000000000   3. -21 to c
00000000000000110000000000000000   4. Test
10001000000000000000000000000000   5. 17 to CI
10101000000001100000000000000000   6. c to 21
10101000000000100000000000000000   7. -21 to c
01001000000000010000000000000000   8. Sub. 18
10101000000001100000000000000000   9. c to 21
10101000000000100000000000000000  10. -21 to c
00000000000001110000000000000000  11. Stop
01001000000000010000000000000000  12. Sub. 18
00000000000000110000000000000000  13. Test
00000000000001110000000000000000  14. Stop
10101000000000100000000000000000  15. -21 to c
00000000000001110000000000000000  16. Stop
11010000000000000000000000000000  17. 11
01011000000000000000000000000000  18. 26