C11111211113313112113313331333133313331333132313331333133313113313222331121   >>    C1111121111331311211331333133313331333133313231333133313331311331322233112   <<    C11111211113313112113313331333133313331333132313331333133313113313222331123   >>      C11111211113313112113313331333133313331333132313331333133313113313222331122   >>