struct Format {
  m1: I32 format "{}"
  m2: U32 format "{}"
  m3: I32 format "{d}"
  m4: U32 format "{d}"
  m5: I32 format "{x}"
  m6: U32 format "{x}"
  m7: I32 format "{c}"
  m8: U32 format "{c}"
  m9: I32 format "{o}"
  m10: U32 format "{o}"
  m11: F32 format "{e}"
  m12: F32 format "{f}"
  m13: F32 format "{g}"
  m14: F32 format "{.3e}"
  m15: F32 format "{.3f}"
  m16: F32 format "{.3g}"
  m17: F32 format "{.3g}%"
}