C22121233131323223313233313231133132333133313113313232313231221   >>    C2212123313132322331323331323113313233313331311331323231323122   <<    C22121233131323223313233313231133132333133313113313232313231223   >>      C22121233131323223313233313231133132333133313113313232313231222   >>