C11111211113313112113313331333133313331333132322121111331311331333112113111   >>    C1111121111331311211331333133313331333133313232212111133131133133311211311   <<    C11111211113313112113313331333133313331333132322121111331311331333112113113   >>      C11111211113313112113313331333133313331333132322121111331311331333112113112   >>