C1111133313331323223313331333133313331323131232233132313231211111   >>    C111113331333132322331333133313331333132313123223313231323121111   <<    C1111133313331323223313331333133313331323131232233132313231211113   >>      C1111133313331323223313331333133313331323131232233132313231211112   >>