| 52-109FV2 - Certification of interim filings - CFO (E) | Oct 30, 2019 |  |
| 52-109FV2 - Certification of interim filings - CEO (E) | Oct 30, 2019 |  |
| 52-109FV2 - Certification of interim filings - CFO (E) | Jul 30, 2019 |  |
| 52-109FV2 - Certification of interim filings - CEO (E) | Jul 30, 2019 |  |