C22121233131323223313233313231133132333133313113313113313221211   >>    C2212123313132322331323331323113313233313331311331311331322121   <<    C22121233131323223313233313231133132333133313113313113313221213   >>      C22121233131323223313233313231133132333133313113313113313221212   >>