Robuta

https://www.fileformat.info/info/unicode/char/02bf/index.htm Unicode Character 'MODIFIER LETTER LEFT HALF RING' (U+02BF) left half ring unicode character modifier letter https://www.fileformat.info/info/unicode/char/031c/index.htm Unicode Character 'COMBINING LEFT HALF RING BELOW' (U+031C) left half ring unicode character combining