(Possible) tone mark indication on mantras?

南牟(一)阿迦(去引)捨(舒可反二)揭(魚羯反)婆(去引)耶(余可反三)唵(四)阿唎(五)迦(入)麼 唎(六)慕唎(七)莎嚩訶(八) 薄伽梵言

What do these marks in parenthesis mean? This is from Tang Dynasty if that helps.

一

舒可反二

去引

余可反三

四

五

入

六

七

八

submitted by /u/jianghaiyang
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