C3131313233313113313223313223313112113313233313133313233313232223323111   >>    C313131323331311331322331322331311211331323331313331323331323222332311   <<    C3131313233313113313223313223313112113313233313133313233313232223323113   >>      C3131313233313113313223313223313112113313233313133313233313232223323112   >>