C22121233131323223313233313231133132333133313113313232213232211   >>    C2212123313132322331323331323113313233313331311331323221323221   <<    C22121233131323223313233313231133132333133313113313232213232213   >>      C22121233131323223313233313231133132333133313113313232213232212   >>