LSX - List Sequence

Input

Examples

Ascending
Input: 
1-20

Output: 
1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20
Descending
Input: 
20-1

Output: 
20, 19, 18, 17, 16, 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1
Stepped
Input: 
1-20x3

Output: 
1, 4, 7, 10, 13, 16, 19
Staggered
Input: 
1-20%3

Output: 
1, 4, 7, 10, 13, 16, 19, 2, 5, 8, 11, 14, 17, 20, 3, 6, 9, 12, 15, 18
Complex
Input: 
1-20%3 !2-16x2 40-30 !35

Output: 
1, 7, 13, 19, 5, 11, 17, 20, 3, 9, 15, 18, 40, 39, 38, 37, 36, 34, 33, 32, 31, 30
Collapsed
Input: 
1, 7, 13, 19, 5, 11, 17, 20, 3, 9, 15, 18, 40, 39, 38, 37, 36, 34, 33, 32, 31, 30

Output: 
1-15x2, 17-20, 30-34, 36-40