SQL & PL/SQL

Hi all,
I need to PLSQL parse this kind of file:

A      B      C
1      2      3
E      F
2      3
2      13

1      2      djkd
E      F
2      13

In my previous PLSQL code version I used UTL_FILE.GET_LINE. The extracted file row is inserted in a PLSQL varchar2 collection, and then parsed.

In this new version I would like to store the file as CLOB in a column of an Oracle Table. Unfortunately, it was quite difficult to read the CLOB Data newline by newline.

What is the best approach? I cannot use the external table. Is there another approach?
Riccardo