/* 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
	{
		String pattern = "[\\s\\p{P}&&[^-]]+";
		String str = "xxxxxxx , yyyyyyy - zzzzzz";
		System.out.println(str.split(pattern)[0]);
		str = "xxxxxxx - zzzzzz";
		System.out.println(str.split(pattern)[0]);
		str = "xxxxxxx, zzzzzz";
		System.out.println(str.split(pattern)[0]);
		str = "xxxxxxx-zzzzzz";
		System.out.println(str.split(pattern)[0]);
	}
}

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