C111123313121111121111331333133313331333133313331333133313231331123232212111   >>    C11112331312111112111133133313331333133313331333133313331323133112323221211   <<    C111123313121111121111331333133313331333133313331333133313231331123232212113   >>      C111123313121111121111331333133313331333133313331333133313231331123232212112   >>