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| 08/14/2007 | 8-K | Report of unscheduled material events or corporate changes. | |    |
| 08/14/2007 | 8-K | Report of unscheduled material events or corporate changes. | |    |
| 07/09/2007 | 8-K | Report of unscheduled material events or corporate changes. | |    |
| 07/02/2007 | 8-K | Report of unscheduled material events or corporate changes. | |    |
| 06/15/2007 | 8-K | Report of unscheduled material events or corporate changes. | |    |
| 06/04/2007 | 8-K | Report of unscheduled material events or corporate changes. | |    |
| 05/15/2007 | 8-K | Report of unscheduled material events or corporate changes. | |    |
| 05/15/2007 | 8-K | Report of unscheduled material events or corporate changes. | |    |
| 05/07/2007 | 8-K | Report of unscheduled material events or corporate changes. | |    |
| 04/24/2007 | 8-K | Report of unscheduled material events or corporate changes. | |    |
| 04/23/2007 | 8-K | Report of unscheduled material events or corporate changes. | |    |
| 03/29/2007 | 8-K | Report of unscheduled material events or corporate changes. | |    |
| 03/06/2007 | 8-K | Report of unscheduled material events or corporate changes. | |    |
| 02/20/2007 | 8-K | Report of unscheduled material events or corporate changes. | |    |
| 02/12/2007 | 8-K/A | Amendment to a previously filed 8-K | |    |
| 02/05/2007 | 8-K | Report of unscheduled material events or corporate changes. | |    |
| 01/19/2007 | 8-K | Report of unscheduled material events or corporate changes. | |    |
| 01/10/2007 | 8-K | Report of unscheduled material events or corporate changes. | |    |
| 12/19/2006 | 8-K | Report of unscheduled material events or corporate changes. | |    |
| 12/12/2006 | 8-K | Report of unscheduled material events or corporate changes. | |    |
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