format_string = " %10s %10s %10s %10s "
print format_string % ('a', 'b', 'a and b', 'a or b')
dash10 = '-' * 10
print format_string % (dash10, dash10, dash10, dash10)
for a in (True, False):
  for b in (True, False):
    a_and_b = a and b
    a_or_b = a or b
    print format_string % (a, b, a_and_b, a_or_b)