C1111233131211111211113313331323133313231121211113313331333112211232233121   >>    C111123313121111121111331333132313331323112121111331333133311221123223312   <<    C1111233131211111211113313331323133313231121211113313331333112211232233123   >>      C1111233131211111211113313331323133313231121211113313331333112211232233122   >>