All BBA-BBN prefixes feature the "large/large" variety, and all BBR-BBZ prefixes feature the "small/small" variety.
Just a note on terminology: On BBA-BBZ notes, there are a total of 4 B's (except for BBB which has six). The first letter in each prefix is the one that has the variation. The middle letter and the third letter will always be the "small" style. So when someone refers to "large/large", they are referring to the first B on the left being of the large variety, and the first B on the right being of the large variety. Similarly, a "large/small" variety means a large B on the left, and a small B on the right.
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BWJM, F.O.N.A.
Life Member of CPMS, RCNA, ONA, ANA, IBNS, WCS.
President, IBNS Ontario Chapter.
Treasurer, Waterloo Coin Society.
Show Chair, Cambridge Coin Show.
Fellow of the Ontario Numismatic Association.