grep find lowercase

Hi,

How can I find any lowercase word located at the beginning of the paragraph and move it to previous line at the end of paragraph ?

Thnak you

example:

Lorem ipsum dolor sit amet, consectetur 

do eiusmod tempor incididunt ut.

Ut enim ad minim veniam, quis nostrud 

nisi ut aliquip ex ea commodo consequat.

Duis aute irure dolor in reprehenderit.

Lorem ipsum dolor sit amet, consectetur do eiusmod tempor incididunt ut.

Ut enim ad minim veniam, quis nostrud nisi ut aliquip ex ea commodo consequat.

Duis aute irure dolor in reprehenderit.