About LATIN SMALL LETTER U WITH DIAERESIS AND MACRON
Latin Small Letter U With Diaeresis And Macron (U+01D6) is a Unicode lowercase letter from the Latin Extended-B block. It resides on Plane 0 (BMP, Basic Multilingual Plane), has bidirectional class L (left-to-right), is not mirrored, and has combining class 0 (Not Reordered). In HTML it can be written as ǖ or ǖ.