C11111333133313232233133313331333131133131121131211113331211211   >>    C1111133313331323223313331333133313113313112113121111333121121   <<    C11111333133313232233133313331333131133131121131211113331211213   >>      C11111333133313232233133313331333131133131121131211113331211212   >>