Mongolian

Block from U+1800 to U+18AF. This block was introduced in Unicode version 3.0 (1999). It contains 156 codepoints.

The Wikipedia provides the following information on block Mongolian:

Note: The following table does not display correctly in FireFox.

Mongolian is a Unicode block containing characters for dialects of Mongolian, Manchu, and Sibe languages. It is traditionally written in vertical lines Top-Down, right across the page, although the Unicode code charts cite the characters rotated to horizontal orientation.

Chart at Unicode.org (PDF)
Block at Decode Unicode