C11111211113313112113313331333133313231323223313331311331311212232133311   >>    C1111121111331311211331333133313331323132322331333131133131121223213331   <<    C11111211113313112113313331333133313231323223313331311331311212232133313   >>      C11111211113313112113313331333133313231323223313331311331311212232133312   >>