C11111333133313232233133313331333133313331312111133133312111111331333132313111   >>    C1111133313331323223313331333133313331333131211113313331211111133133313231311   <<    C11111333133313232233133313331333133313331312111133133312111111331333132313113   >>      C11111333133313232233133313331333133313331312111133133312111111331333132313112   >>