print( "not true and false	=", not true and false )
print( "not (true and false)	=", not (true and false) )
print( "true and not false	=", true and not false )
print( "not true or false	=", not true or false )
print( "not (true or false)	=", not (true or false) )
print( "true or not false	=", true or not false )