[grid-lanes-column-subgrid-computed.html]
  [Property grid-template-columns value 'subgrid']
    expected: FAIL

  [Property grid-template-columns value 'subgrid [a\]']
    expected: FAIL

  [Property grid-template-columns value 'subgrid [a\] [b\]']
    expected: FAIL

  [Property grid-template-columns value 'subgrid [a\] [\] [b\]']
    expected: FAIL

  [Property grid-template-columns value 'subgrid repeat(auto-fill, [a\])']
    expected: FAIL

  [Property grid-template-columns value 'subgrid repeat(2, [a\] [b\])']
    expected: FAIL

  [Property grid-template-columns value 'subgrid [a\] repeat(auto-fill, [b\]) [c\]']
    expected: FAIL