C11111333133313232233133313331333131121133131133133313231121131311   >>    C1111133313331323223313331333133313112113313113313331323112113131   <<    C11111333133313232233133313331333131121133131133133313231121131313   >>      C11111333133313232233133313331333131121133131133133313231121131312   >>