This is a test for line layout to properly handle collapsing whitespace interspersed with inline isolated content.
123 456 789
123 456 789
123 4 56 789
123 456 789
1 2 3 4 5 6 7 8 9
123 789
123 789
123 4 56 789 10 11 12 13 14 15
123 4 5 6 7 89 10 11 12 13 14 15