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Given two positive numbers **L** and **R** **(L < R)**, find out the smallest twins in the range **[L , R]**.Two numbers are twins if they are **prime numbers **and difference between them is 2.

**Example 1:**

**Input**: L = 0, R = 5
**Output:** [3, 5]
**Explanation**: Difference between 3 and 5 is 2
and also these two are smallest prime in range.
So the answer is 3, 5.

**Example 2:**

**Input: **L = 5, R = 10
**Output: **[5, 7]
**Explanation**: Difference between 5 and 7 is 2
and also these two are smallest prime in range.
So the answer is 5, 7.

**Your Task: **

You dont need to read input or print anything. Complete the function **primeTwins() **which takes L and R as input parameter and returns a pair if exist else returns -1.

**Expected Time Complexity:** O(nloglogn)

**Expected Auxiliary Space:** O(n)

**Constraints:**

0<= L <=500

2<= R <=1000

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The Prime Twins

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