Part 1: 0 to {10, 10, 100} Part 2: {10, 10, 100} to {10, 100 [2] 2} Part 3: {10, 100 [2] 2} to {10, 100 [3] 2} Part 4: {10, 100 [3] 2} to {10, 100 [1, 2] 2} Part 5: {10, 100 [1, 2] 2} to {10, 100 [1 [2] 2] 2} Part 6: {10, 100 [1 [2] 2] 2} to {10, 100 [1 \ 2] 2} Part 7: {10, 100 [1 \ 2] 2} to {10, 100 [1 \ 3] 2} Part 8: {10, 100 [1 \ 3] 2} to {10, 100 [1 \ 1, 2] 2} Part 9: {10, 100 [1 \ 1, 2] 2} to {10, 100 [1 \ 1 [2] 2] 2} Part 10: {10, 100 [1 \ 1 [2] 2] 2} to {10, 100 [1 \ [1 \ 2] ] 2} Part 11: {10, 100 [1 \ [1 \ 2]] 2} to {10, 100 [1 \ 1 \ 2] 2} Part 12: {10, 100 [1 \ 1 \ 2] 2} to {10, 100 [1 [2 - 2] 2] 2} Part 13: {10, 100 [1 [2 - 2] 2] 2} to {10, 100 [1 [1 \ 2 - 2] 2] 2} Part 14: {10, 100 [1 [1 \ 2 - 2] 2] 2} to {10, 100 [1 [1 [2 - 2] - 2] 2] 2} Part 15: {10, 100 [1 [1 [2 - 2] - 2] 2] 2} to {10, 100 [1 [1 - 3] 2] 2} Part 16: {10, 100 [1 [1 - 3] 2] 2} to {10, 100 [1 [1 - 4] 2] 2} Part 17: {10, 100 [1 [1 - 4] 2] 2} to {10, 100 [1 [1 - 1, 2] 2] 2} Part 18: {10, 100 [1 [1 - 1, 2] 2] 2} to {10, 100 [1 [1 - 1 [2] 2] 2] 2} Part 19: {10, 100 [1 [1 - 1 [2] 2] 2] 2} to {10, 100 [1 [1 - 1 [1 \ 2] 2] 2] 2} Part 20: {10, 100 [1 [1 - 1 [1 \ 2] 2] 2] 2} to {10, 100 [1 [1 - 1 \ 2] 2] 2}