C11112331333132311331333133313331333132233131331211113313233113121   >>    C1111233133313231133133313331333133313223313133121111331323311312   <<    C11112331333132311331333133313331333132233131331211113313233113123   >>      C11112331333132311331333133313331333132233131331211113313233113122   >>