The block has eleven variation sequences defined for standardized variants.[3] They use U+FE00 VARIATION SELECTOR-1 (VS01) to denote the dotted letters used for the Khamti, Aiton, and Phake languages.[4] (Note that this is font dependent. For example, the Padauk font supports some of the dotted forms.)
Variation sequences for dotted forms
U+
AA60
AA61
AA62
AA63
AA64
AA65
AA66
AA6B
AA6C
AA6F
AA7A
base code point
ꩠ
ꩡ
ꩢ
ꩣ
ꩤ
ꩥ
ꩦ
ꩫ
ꩬ
ꩯ
ꩺ
base + VS01
ꩠ︀
ꩡ︀
ꩢ︀
ꩣ︀
ꩤ︀
ꩥ︀
ꩦ︀
ꩫ︀
ꩬ︀
ꩯ︀
ꩺ︀
History
The following Unicode-related documents record the purpose and process of defining specific characters in the Myanmar Extended-A block:
Anderson, Deborah; Whistler, Ken; Pournader, Roozbeh; Moore, Lisa; Constable, Peter; Liang, Hai (2020-10-01), "17. Myanmar", Recommendations to UTC #165 October 2020 on Script Proposals
Moore, Lisa (2020-10-27), "Consensus 165-C19", UTC #165 Minutes, The UTC accepts a formal name alias of type "correction" for U+AA6E MYANMAR LETTER KHAMTI HHA, for Unicode version 14.0. The formal name alias will be: MYANMAR LETTER KHAMTI LLA.