C11112331333132311331333132313331333133313233111211113313133311   >>    C1111233133313231133133313231333133313331323311121111331313331   <<    C11112331333132311331333132313331333133313233111211113313133313   >>      C11112331333132311331333132313331333133313233111211113313133312   >>