C11111333133313232233133313331333131133131211111333132313332212111113231231   >>    C1111133313331323223313331333133313113313121111133313231333221211111323123   <<    C11111333133313232233133313331333131133131211111333132313332212111113231233   >>      C11111333133313232233133313331333131133131211111333132313332212111113231232   >>