Desing pattern suggestions for sequential jobs which follows previous steps output

I want to design a subtitle-word parser. It works like that;

1. Check subtitle provider for availability
2. Fetch subtitle as inputStream
3. Convert inputStream to lines of text
4. Parse lines to sections ( A subtitle file includes 100 - 110 sections )
5. Parse sections' sentences to words
6. Save subtitle, section and word to DB

As you see every step follows previous steps output.

Which design pattern(s) I should use?