Format      ; Parent Format ; Comment
X XXX XXX*  ; fmt_1/4-9     ; "Alternative format for one-digit prefix mid-length numbers."
XX XXX XXX* ; fmt_2/4-8     ; "Alternative format for two-digit prefix mid-length numbers."
X XXXX XXX  ; fmt_1/4-9     ; "Alternative format for one-digit prefix mid-length numbers."