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| 0001628280-21-021626.txt | 2021-11-04 09:01:13 | |
 0001628280-21-021626-xbrl.zip | 21750 | 2021-11-04 09:01:13 |
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| FilingSummary.xml | 1648 | 2021-11-04 09:01:13 |
| Financial_Report.xlsx | 5712 | 2021-11-04 09:01:13 |
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| R1.htm | 41926 | 2021-11-04 09:01:13 |
| report.css | 2767 | 2021-11-04 09:01:13 |
| Show.js | 1085 | 2021-11-04 09:01:13 |
 x4logo.jpg | 9468 | 2021-11-04 09:01:13 |
| xfor-20211104.htm | 37722 | 2021-11-04 09:01:13 |
| xfor-20211104.xsd | 1914 | 2021-11-04 09:01:13 |
| xfor-20211104_htm.xml | 11812 | 2021-11-04 09:01:13 |
| xfor-20211104_lab.xml | 25998 | 2021-11-04 09:01:13 |
| xfor-20211104_pre.xml | 13731 | 2021-11-04 09:01:13 |