A pair of rabbits gives birth to another pair every month, starting from the second month after birth no rabbits die. This rabbit increases every month following the Virahanka-Fibonacci rule.
Month \(1\) : \(1\) pair
Month \(2\) : \(2\) pairs
Month \(3\) : \(3\) pairs
How many pairs of rabbits will there be after 12 months?
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