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| FilingSummary.xml | 2356 | 2022-08-09 10:59:18 |
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| hei-20220805.htm | 45052 | 2022-08-09 10:59:18 |
| hei-20220805.xsd | 3283 | 2022-08-09 10:59:18 |
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| hei-20220805_htm.xml | 14185 | 2022-08-09 10:59:18 |
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