C11111211113313112113313331333133313331312322121111331333132233133323111   >>    C1111121111331311211331333133313331333131232212111133133313223313332311   <<    C11111211113313112113313331333133313331312322121111331333132233133323113   >>      C11111211113313112113313331333133313331312322121111331333132233133323112   >>