C11111211113313112113313331333133313331333132313331333133313331331123212323311   >>    C1111121111331311211331333133313331333133313231333133313331333133112321232331   <<    C11111211113313112113313331333133313331333132313331333133313331331123212323313   >>      C11111211113313112113313331333133313331333132313331333133313331331123212323312   >>