Dakuten and handakuten

◌゙
◌゚
◌゙; ◌゚o
Dakuten and handakuten
	Combining characters U+3099 ◌゙ COMBINING KATAKANA-HIRAGANA VOICED SOUND MARK; U+309A ◌゚ COMBINING KATAKANA-HIRAGANA SEMI-VOICED SOUND MARK; ; Stand-alone characters U+309B ゛ KATAKANA-HIRAGANA VOICED SOUND MARK; U+309C ゜ KATAKANA-HIRAGANA SEMI-VOICED SOUND MARK; U+FF9E ﾞ HALFWIDTH KATAKANA VOICED SOUND MARK; U+FF9F ﾟ HALFWIDTH KATAKANA SEMI-VOICED SOUND MARK; ;

The dakuten (Japanese: 濁点; Japanese pronunciation: [da.kɯ̥.te(ꜜ)ɴ], lit. 'muddying/voicing mark'), colloquially ten-ten (点々, "dots"), is a diacritic most often used in the Japanese kana syllabaries to indicate that the consonant of a mora should be pronounced voiced, for instance, on sounds that have undergone rendaku (sequential voicing).

The handakuten (半濁点; [han.daꜜ.kɯ̥.teɴ], lit. 'semi-muddying/voicing mark'), colloquially maru (丸, "circle"), is a diacritic used with kana for morae pronounced with /h/ or /f/ to indicate that they should instead be pronounced with /p/.