1. https://ideone.com/knu0Et
  2. https://jsfiddle.net/efhaugsn/
  3. https://paste.tbee-clan.de/dZTMj
  4. http://paste.jp/3de5b953/
  5. https://pastebin.com/mugQHvXm
  6. https://osf.io/n7m6u/
  7. https://osf.io/4rkc8/
  8. https://osf.io/r42tq/
  9. https://osf.io/9fa4m/
  10. https://osf.io/49txv/
  11. https://osf.io/6zkvs/
  12. https://osf.io/yp76q/
  13. https://osf.io/yq97b/
  14. https://osf.io/udk86/
  15. https://osf.io/6g9ar/