2. Second Language - Persons might speak only one language and some might speak more than one language. As stated above, the first language taught by the parents and spoken since childhood in the household is the mother tongue. If some people know any other language besides mother tongue and frequently use that language while speaking with neighbors or others, then that language should be denoted as the second language.

In other words, the mother tongue is the first language, and language learnt after the mother tongue and frequently spoken with neighbors and others is the second language. If many languages are spoken, then the most frequently spoken language among them should be written in "second language".

If no other second language is known besides the mother tongue, then to signify that no second language is known a horizontal dash (--) should be given; the space shouldn't be left empty.

[Two examples have been omitted.]