/* package whatever; // don't place package name! */
 
import java.util.*;
import java.lang.*;
import java.io.*;
 
/* Name of the class has to be "Main" only if the class is public. */
class Ideone
{
	public static void main (String[] args) throws java.lang.Exception
	{
		// your code goes here
		String[] inputs = {"[1","2","[3","[4","5]]","[6","7]"};
		int n = inputs.length;
		String[] output = new String[n];
 
		for(int index=0;index<n;index++){
 
			String str = inputs[index];
			str = str.replace("[","");
			str = str.replace("]","");
			output[index] = str;
		}
 
		for(int index=0;index<n;index++)
			System.out.print(output[index]+" ");
	}
}

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