C1111133313331323223313331333133313311232313112121111331313231211   >>    C111113331333132322331333133313331331123231311212111133131323121   <<    C1111133313331323223313331333133313311232313112121111331313231213   >>      C1111133313331323223313331333133313311232313112121111331313231212   >>