C1111133313331323223313331333133313331323131211113313221211111333133323111   >>    C111113331333132322331333133313331333132313121111331322121111133313332311   <<    C1111133313331323223313331333133313331323131211113313221211111333133323113   >>      C1111133313331323223313331333133313331323131211113313221211111333133323112   >>