OK. Use the same print page numbers you see in the print copy. Continue braille page numbering as it falls consecutively. It may require a bit of software wrestling to get this to work! I see no guidance in our codebooks regarding the use/nonuse of a letter indicator for an alphabetic page number that has no number associated with it. I would use the letter indicator for the capitalized letters A B C and D, but not for the lettered continuation letter (if any). Like this (the colon represents a letter indicator; the period represents a capitalization indicator)
:.A then a:.A then b:.A then :.B then a:.B etc.
I welcome arguments.