Many Thanks for the answer.
Please let me know if there is any trick to remove water on the "Fly", or does every one has bear the pain and continue.
Also I had second query.
1) Normally during my initial period of swimming session, I tend to blow bubbles in single "Whoop", rather than contineous stream.
When I spend some more time in water while swimming I am able to stream out the air from my lungs.
Is this the case with every swimmer?