Sinhala Vowel Sign Aela-pilla (U+0DCF) is a Unicode spacing combining mark from the Sinhala 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 ා or ා.