C11111211113313112113313331333133313331333132313331333133313233211331311111   >>    C1111121111331311211331333133313331333133313231333133313331323321133131111   <<    C11111211113313112113313331333133313331333132313331333133313233211331311113   >>      C11111211113313112113313331333133313331333132313331333133313233211331311112   >>