p-start', 'position-area', 'block-end inline-start', 'end start');
test_computed_value('flip-block flip-inline flip-start', 'position-area', 'block-end inline-end', 'start');
test_computed_value('flip-block flip-inline flip-start', 'position-area', 'block-start inline-end', 'start end');

// Variations:
test_computed_value('flip-block flip-inline', 'position-area', 'span-block-start span-inline-start', 'span-end');
test_computed_value('flip-block flip-inline', 'position-area', 'self-block-start self-inline-