0 - 2 of 2 tags for Dynamic Concatenation

I'm looking into usage of function: tdstats.udfconcat. Is there any way to control the order of the values that this function concatenates?
If I have a table: TABLE1 that looks like this:
Column_A               Column_B
55555                     123
55555                     124
55555                     125

I am trying to concatenate 2 fields ACCT_NO and BR_NO where both fields should add up to 12 character and if not I should add leading zeros. concatenation must have a suffix of TDA. For example: