C111123313121111121111331333133313113313232123313331323232212111   >>    C11112331312111112111133133313331311331323212331333132323221211   <<    C111123313121111121111331333133313113313232123313331323232212113   >>      C111123313121111121111331333133313113313232123313331323232212112   >>