permalink query more
In the dataset march_2020.json(mobile) at least 79 pages (0.0014406281576426509% ) match 6 variants of the terms below..
see details 
/* Matching: 
  /qr/ 
*/ 
[
  {
    "term": "/qr/",
    "matched": "msqrt",
    "pages": 79
  },
  {
    "term": "/qr/",
    "matched": "qrcode",
    "pages": 71
  },
  {
    "term": "/qr/",
    "matched": "sqr-notificator",
    "pages": 20
  },
  {
    "term": "/qr/",
    "matched": "sqr-cookie-law",
    "pages": 20
  },
  {
    "term": "/qr/",
    "matched": "sqr-managed-content",
    "pages": 20
  },
  {
    "term": "/qr/",
    "matched": "sqr-nav-menu-mobile",
    "pages": 17
  }
]