Tips for studying foreign languages

What does 'nip' stand for in the code language? I. In the code language, 'that is very beautiful' is written as 'se nip sre num'. II. In the same code language, 'my house is beautiful' is written as 'nip sto sre tip'.

The given Venn diagram represent the number of students in a class who study three languages, French Spanish and Japanese. The number of students studying French, Spanish and Japanese is: