| Filing date | Description |
|---|---|
| Report of foreign issuer rules 13a-16 and 15d-16 of the Securities Exchange Act | |
| Statement of changes in beneficial ownership of securities | |
| Statement of changes in beneficial ownership of securities | |
| Statement of changes in beneficial ownership of securities | |
| Report of foreign issuer rules 13a-16 and 15d-16 of the Securities Exchange Act |
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