It is recommended that you write comment at the number so that everybody recognize them quickly. Comment starts ! mark.
For example:
12, 10, 3, 2 !TDC ROC#7 Sl#22 Ch#12 KSCIN pl#10 id sig#3 [TDC] 13, 10, 7, 2 !TDC ROC#7 Sl#22 Ch#13 KSCIN pl#10 id sig#7 [TDC] 14, 10, 4, 2 !TDC ROC#7 Sl#22 Ch#14 KSCIN pl#10 id sig#4 [TDC] 15, 10, 8, 2 !TDC ROC#7 Sl#22 Ch#15 KSCIN pl#10 id sig#8 [TDC]