C11111333133313232233133313331333133313331311211331333133313331333132322331121   >>    C1111133313331323223313331333133313331333131121133133313331333133313232233112   <<    C11111333133313232233133313331333133313331311211331333133313331333132322331123   >>      C11111333133313232233133313331333133313331311211331333133313331333132322331122   >>