C111123313331323113313331333133313331323131211113313121111331331121323321   >>    C11112331333132311331333133313331333132313121111331312111133133112132332   <<    C111123313331323113313331333133313331323131211113313121111331331121323323   >>      C111123313331323113313331333133313331323131211113313121111331331121323322   >>