An example string:
AB-XYZ-123
Where:
AB : Any two capital alphabets only, no symbol, no numbers, no Small letter alphabets.
- : A - symbol only, nothing else.
XYZ: Any three capital characters capital letter alphabets combination.
- : A - symbol only, nothing else.
123: Any three numbers ([0-9]) combination.
and yeah I am very weak in creating regex.
Try this one