H  is "-"

N is ""

s is "/"

F is Financial Year eg. "2022-23"

f is Financial Year eg. "22-23"

Y is year eg. "2022"

y is year "22"

M is month eg. "03"

D is date eg. "01"

1 to 7 is length of number at the end

Anything other than above will go as it is inside the TAG.