Columnize nested tables with repeating thead and tfoot

This is a test page to show how columnizing works with repeating thead and tfoot in nested tables

-- Header 1 -- -- Header 2 -- -- Header 3 --
-- Footer 1 -- -- Footer 2 -- -- Footer 3 --
Column 1 Column 2 Column 3
Column 1 Column 2 Column 3
Column 1 Column 2 Column 3
Column 1 Column 2 Column 3
Column 1 Column 2 Column 3
Column 1 Column 2 Column 3
Column 1 Column 2 Column 3
Column 1 Column 2 Column 3
Column 1 Column 2 Column 3
Column 1 Column 2 Column 3
Column 1 Column 2 Column 3
Column 1 Column 2 Column 3
Column 1 Column 2 Column 3
Column 1 Column 2 Column 3
Column 1 Column 2 Column 3
Column 1 Column 2 Column 3
Column 1 Column 2 Column 3
Column 1 Column 2 Column 3
Header A Header B Header C Header D
Footer A Footer B Footer C Footer D
Column A Column B Column C Column D
Column A Column B Column C Column D
Column A Column B Column C Column D
Column A Column B Column C Column D
Column A Column B Column C Column D
Column A Column B Column C Column D
Column A Column B Column C Column D
Column A Column B Column C Column D
Column A Column B Column C Column D
Column A Column B Column C Column D
Column A Column B Column C Column D
Column A Column B Column C Column D
Column A Column B Column C Column D
Column A Column B Column C Column D
Column A Column B Column C Column D
Column A Column B Column C Column D
Column A Column B Column C Column D
Column A Column B Column C Column D
Column A Column B Column C Column D
Column A Column B Column C Column D
Column A Column B Column C Column D
Column A Column B Column C Column D
Column A Column B Column C Column D
Column A Column B Column C Column D
Column A Column B Column C Column D
Column A Column B Column C Column D
Column A Column B Column C Column D
Column A Column B Column C Column D
Column A Column B Column C Column D
Column A Column B Column C Column D
Column A Column B Column C Column D
Column A Column B Column C Column D
Column A Column B Column C Column D
Column A Column B Column C Column D
Column A Column B Column C Column D
Column A Column B Column C Column D
Column A Column B Column C Column D
Column A Column B Column C Column D
Column A Column B Column C Column D
Column A Column B Column C Column D
Column A Column B Column C Column D
Column A Column B Column C Column D
Column A Column B Column C Column D
Column A Column B Column C Column D
Column A Column B Column C Column D
Column A Column B Column C Column D
Column A Column B Column C Column D
Column A Column B Column C Column D
Column A Column B Column C Column D
-- Header Only X -- -- Header Only Y --
Column X Column Y
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Column A Column B Column C Column D
Column A Column B Column C Column D
Column A Column B Column C Column D
Column 1 Column 2 Column 3
Column 1 Column 2 Column 3
Column 1 Column 2 Column 3
Column 1 Column 2 Column 3
Column 1 Column 2 Column 3
Column 1 Column 2 Column 3
Column 1 Column 2 Column 3
Column 1 Column 2 Column 3
Column 1 Column 2 Column 3
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Column 1 Column 2 Column 3
Column 1 Column 2 Column 3
Column 1 Column 2 Column 3
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Column 1 Column 2 Column 3
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Column 1 Column 2 Column 3
Column 1 Column 2 Column 3
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Column 1 Column 2 Column 3
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