C1111133313331323223313331333133313331323223331211111333131133231   >>    C111113331333132322331333133313331333132322333121111133313113323   <<    C1111133313331323223313331333133313331323223331211111333131133233   >>      C1111133313331323223313331333133313331323223331211111333131133232   >>