print("""
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
X X 1 2 3 4 5 6 7 8 9 10 X
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
X 1 X 1 2 3 4 5 6 7 8 9 10 X
X 2 X 2 4 6 8 10 12 14 16 18 20 X
X 3 X 3 6 9...............................
X 4 X 4 8...................................
X 5 X 5 10...................................
................................................
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
""")