How to add the paragraph indent level value to the link list

 please help me to add the paragraph indent level value to the link list using c#. the paragraph indent value is different, i want to store all the value to the link list. please help to do this early as possible.
 Backup service coverage, 193–4, 196  // indent value is 35
BAL (BCCH Allocation List), 114, 213
Balancing, 23, 25, 43, 115, 156, 169, 173, 175, 184, 186–91, 217
techniques, 188, 250, 255
differential, 233–4, 236, 243, 248, 251 // indent value is 46
procedure, 76, 177–8  // indent value is 56
requests, 171–2
druf23trfut24ift4ieft6
Band, 11–13, 99, 191–3, 213
Bandwidth, 8, 13, 81, 94, 97–8, 100, 181–2
Base station controller. See BSC
BSC (Base Station Controller), 59, 74, 77, 79, 99–100, 141, 211–12
BSIC (Base