Re-Entry Permit question

[davidid8]

If one's Re-Entry permit say expires Dec 1, 2011, and he/she enters the US on May 1, 2011.
Say he/she wants to leave the US again on June 1, 2011, and do not plan to go back to the US until 1 year later.
Can he/she apply for another Re-Entry permit after he/she re-enters the US in May 1,2011 ? (I mean while her 1st Re-Entry permit is still valid).
Thank you.

[davidid8]

I forgot to mention that even though he/she applies for Re-Entry Permit, he/she is out of the US for less than 1 year (but more than 6 months).
And, the 2nd time he/she will also stay out of the US for less than 1 year (but more than 6 months).
I read/heard that even though you do not need to apply for Re-Entry permit if you are only out of the US > 6 months and < 1 year, but it is recommended.