C1111233131211111211113313231333133313331323221333133311331333132313113321   >>    C111123313121111121111331323133313331333132322133313331133133313231311332   <<    C1111233131211111211113313231333133313331323221333133311331333132313113323   >>      C1111233131211111211113313231333133313331323221333133311331333132313113322   >>