C111123313121111121111331333133313221333131121211113313231121311   >>    C11112331312111112111133133313331322133313112121111331323112131   <<    C111123313121111121111331333133313221333131121211113313231121313   >>      C111123313121111121111331333133313221333131121211113313231121312   >>