點解日文歌詞的羅馬拼音中經常會出現*****

when there are some bad words in the romanji e.g. the word [s h i t], the machine will hide the bad word automatically and you will only see **** in the answer
e.g. Donna ni sabishikute mo mata aeru ki ga [shi t]e iru kara
Riyuu nante iranai hiki kaesenai koto wo [shi t]te iru
the machine will hide the letters [s h i t] and the answer will be changed to ....
= => Donna ni sabishikute mo mata aeru ki ga shite iru kara
Riyuu nante iranai hiki kaesenai koto wo shitte iru