def print_mirrored_half_diamond(n):
   if n < or n >10:
   print("invalid input")
   return
   
   for i in range(1,n+1):
   print(" " * (n - i) + "*" * i + "*" *(i - 1))
   
   for i in range(n - 1,0,-1):
   print (" " * (n - 1) + "*" * i + "*" *(i - 1))