| 52-109F2 - Certification of interim filings - CFO (E) | 06 Nov 2019 |  |
| 52-109F2 - Certification of interim filings - CEO (E) | 06 Nov 2019 |  |
| 52-109F2 - Certification of interim filings - CEO (E) | 14 May 2019 |  |
| 52-109F2 - Certification of interim filings - CFO (E) | 14 May 2019 |  |
| 52-109F2 - Certification of interim filings - CEO (E) | 12 Feb 2019 |  |
| 52-109F2 - Certification of interim filings - CFO (E) | 12 Feb 2019 |  |