Bulk move 'The' and 'A' to end of Title

Because of the way I handled things before using calibre I have a large number of books whose Titles are 'The xxxxx xxxx' and "A xxxx xxxx'.

Is there a way of automating conversion to 'xxxxx xxx, The' and 'xxxx xxxx, A'.

I can use a regex in Search and Replace to remove 'The" and 'A', but there doesn't seem a way to add them to the end.

Without creating a new column with the modified values and hiding the original.