Use a lettering system without base to track sets of log entries.

[marcnoon]

Use lettering basic set theory to keep track of log messages.

[marcnoon]

examples where each letter represents a specifc message for any number of datetime guide instances:
a - [1,2,3] where number represent line number
b - [4-10]
c - summation i=0 to n is 2i = x even numbers
d - summation i=0 to n is 2i +1 = x odd numbers
e - etc...