what are some of the examples?
i'm not sure i understand what you are asking.
maybe this will help:
whenever you're labeling intervals,
you want to try to match the note letter with the interval number.
hears what i mean.
let's use F as our root:
1 b2 2 b3 3 4 #4 5 b6 6 b7 7
F Gb G Ab A Bb B C Db D Eb E
notice how:
1 uses f /the 2's use G's/ the 3's use A's (etc)
this makes it look cleaner and more oranized.
this is what it would look like without this:
1 b2 2 b3 3 4 #4 5 b6 6 b7 7
F F# G G# A A# B C C# D D# Fb
evan though they're the same notes,
notice how it looks alot more confusing.
Please let me know if this helps.