largest, smallest, 2nd largest & 2nd smallest

[bittubadri]

I want to fill largest, smallest, 2nd largest (smaller than largest & non duplicate of largest) & 2nd smallest (larger than smallest & non duplicate of smallest) from an array B3:L42 (contiguous columns)

Arrays for largest: N3:N42
Arrays for smallest: O3:O42
Arrays for 2nd largest: P3:P42
Arrays for 2nd smallest: Q3:Q42

How to accomplish?
Thanks in advance.
Sheet1

B C D E F G H I J K L M N O P Q
2 Largest Smallest 2nd Largest 2nd Smallest
3 20 30 -40 5 -20 30 -5 -20 0 8 -100 30 -100 20 -20