I need to split whole text to 4 parts.
for example:
AAAA: AAAAAAAAAAAAAAA AAAAAAAA AAAAAAAAAAAA AAAAAAAAAAAAAA. BBBB: BBBBBBBBBB BBBBBBBBBBBBB BBBBBBBBB BBBBBBB. CCCC: CCCCCCC CCCCC CCCCCC CCCCCCCCCCC CCCC CCCC CCCCC. DDDD: DDDDDDDDDD DDDDDDDDD DDDDDDDDDD DDDDDDDDDD DDDDDDDDDDD.
To
AAAA: AAAAAAAAAAAAAAA AAAAAAAA AAAAAAAAAAAA AAAAAAAAAAAAAA.
BBBB: BBBBBBBBBB BBBBBBBBBBBBB BBBBBBBBB BBBBBBB.
CCCC: CCCCCCC CCCCC CCCCCC CCCCCCCCCCC CCCC CCCC CCCCC.
DDDD: DDDDDDDDDD DDDDDDDDD DDDDDDDDDDDDDDDDDDDD DDDDDDDDDDD.