Regex for this format
i want to use regex for this format to use in C#

format like this:

(EMPnnnRTLnnnn-aaaa or EMPnnnnBBCaaaa-nn) where n 
signifies a single number between (0 – 9) and “a” specifies a 
single lower-case alphabet between (A – Z).

 e.g. 
EMP0001RTL1489-azio, EMP9212BBCgqui-02
Regex for this format
===

i want to use regex for this format to use in C#

format like this:

(EMPnnnRTLnnnn-aaaa or EMPnnnnBBCaaaa-nn) where n 
signifies a single number between (0 – 9) and “a” specifies a 
single lower-case alphabet between (A – Z).

 e.g. 
EMP0001RTL1489-azio, EMP9212BBCgqui-02