C22121233131323223313233313231133132333133313113313231323221221   >>    C2212123313132322331323331323113313233313331311331323132322122   <<    C22121233131323223313233313231133132333133313113313231323221223   >>      C22121233131323223313233313231133132333133313113313231323221222   >>