C11111211113313112113313331333133313331333132313331333133313331311221123113311   >>    C1111121111331311211331333133313331333133313231333133313331333131122112311331   <<    C11111211113313112113313331333133313331333132313331333133313331311221123113313   >>      C11111211113313112113313331333133313331333132313331333133313331311221123113312   >>