C111123313121111121111331333133313331323232133313331311211332313233213111   >>    C11112331312111112111133133313331333132323213331333131121133231323321311   <<    C111123313121111121111331333133313331323232133313331311211332313233213113   >>      C111123313121111121111331333133313331323232133313331311211332313233213112   >>