Product Suggestions

Given an array of strings products and a string searchWord.

We want to design a system that suggests at most three product names from products after each character of searchWord is typed.

Suggested products should have common prefix with the searchWord.

If there are more than three products with a common prefix return the three lexicographically minimums products.

Input

The input consists of three arguments:

products: a list of strings representing the products name

searchWord: a strings for search word

Output

Return list of lists of the suggested products after each character of searchWord is typed.

Examples

Example 1:

Input:

  keywords = ["mobile","mouse","moneypot","monitor","mousepad"]

searchWord = "mouse"

Output:

 [
   ["mobile","moneypot","monitor"],
   ["mobile","moneypot","monitor"],
   ["mouse","mousepad"],
   ["mouse","mousepad"],
   ["mouse","mousepad"]
 ]

Explanation:

products sorted lexicographically = ["mobile","moneypot","monitor","mouse","mousepad"]

After typing m and mo all products match and we show user ["mobile","moneypot","monitor"]

After typing mou, mous and mouse the system suggests ["mouse","mousepad"]

Examples

Example 2:

Input:

  keywords = ["havana"]

searchWord = "havana"

Output: [["havana"],["havana"],["havana"],["havana"],["havana"],["havana"]]

Examples

Example 3:

Input:

  keywords = ["bags","baggage","banner","box","cloths"]

searchWord = "bags"

Output: [["baggage","bags","banner"],["baggage","bags","banner"],["baggage","bags"],["bags"]]

Examples

Example 4:

Input:

  keywords = ["havana"]

searchWord = "tatiana"

Output: [[],[],[],[],[],[]]

Try it yourself