Super Mario Bros.: The Lost Levels

What levels in this game have tricks to get infinite 1ups,and how do we preform them?
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Pokemon Black 2 [OU rules player] Rosa:4170-2970-6954 PM Me if you add me.

http://www.youtube.com/watch?v=hW8rrU-9N0Q

http://www.youtube.com/watch?v=9R4mrpaTXFc

http://www.youtube.com/watch?v=C8oHnsBIptI

First two are tricks in the very first stage. Can't pass 127 lives or when you die, you'll insta game over.

Third video is a trick in A-1. You'll unlock the letter worlds after beating the game 8 times.
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