/* REXX */

PARSE ARG _'{'!'}'_
PARSE VAR ! ?_'_'_?_'_'_?
_.='EM0';_._=_.WOA!'CEWL'

A=\VERIFY(?_,_._)&\ABBREV(D2C(15123923),?_,3)
B=POS(0,?_)=5&LENGTH(?_)=7

E.1='9DA8ADAE9FB9BB0137108E8D11363D1DB0'
E.2='8BBE98BD36021C32888E00350126231C9E2126301C2500000A251188B11D2BB31D'
E.3='25BBAC3301243316302334002435163524330024321636233200153513351733072437B0B5B0813F'
E.4='8B8EAD24021788240C3024260D882537348E12300704260A8E9DAF8E8BAE22A80989988D222100BD17981D1D'
E.5='8B8EBEBD2631003F16122BBDA91C9B27370112371CABA8A888019F378D3421A80289AE8BBE98B89B25351D'
E.6='2F0393B89D841303000A10313C888B8EA8A89D9FA8BBBBBEACB0370D23109361717C850E537783774266A6665B46B05256C1C7'

IF A&B THEN
  DO i = 1 TO 6
    BC = X2C(E.i)
    NC = ABS(LENGTH(BC)%LENGTH(?_))
    BCD = BITXOR(BC,COPIES(?_,NC),' ')
    interpret BCD
  END
ELSE say oof no flag