
theorem
  for p being FinSequence, x,y,z being object st
  p is one-to-one & rng p = {x,y,z} & x <> y & y <> z & z <> x holds
  p = <* x,y,z *> or p = <* x,z,y *> or p = <* y,x,z *> or
  p = <* y,z,x *> or p = <* z,x,y *> or p = <* z,y,x *> by Lm13;
