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              [html]<thead><tr><td>( In millions of dollars )</td><td>Amortization Period</td><td>Net Income if Life Increased by 1 year</td><td>Net Income if Life Decreased by 1 year</td></tr></thead><tbody><tr><td>Brand Names</td><td>5 – 20 years</td><td>5</td><td>1</td></tr><tr><td>5</td><td>( 1 )</td><td>Customer Relationships</td><td>3 - 10 years</td></tr><tr><td>S</td><td>19</td><td>S</td><td>( 31 )</td></tr><tr><td>Roaming Agreements</td><td>12 years</td><td>5</td><td>3</td></tr></tbody>
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