C11111333133313232233133313331333133313231312111133131121223321   >>    C1111133313331323223313331333133313331323131211113313112122332   <<    C11111333133313232233133313331333133313231312111133131121223323   >>      C11111333133313232233133313331333133313231312111133131121223322   >>