/* package whatever; // don't place package name! */
 
import java.util.*;
import java.lang.*;
import java.io.*;
import java.util.regex.*;
/* 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 str = "some text key 12, 32, 311 ,465 and 345. some other text dog 612,\n12, 32, 9 and 10. some text key 1, 2.";
		String str2 = "some text key 1, 2, 3 ,4 and 5. some other text dog 6, 7, 8, 9 and 10. some text, key 1, 2 dog 3, 4 key 5, 6";
		Pattern ptrn = Pattern.compile("(?<=key(?:(?!dog)[^.]){0,100})[0-9]+");
        Matcher m = ptrn.matcher(str);
        while (m.find()) {
            System.out.println(m.group(0));
        }
        System.out.println("-----");
        m = ptrn.matcher(str2);
        while (m.find()) {
            System.out.println(m.group(0));
        }
	}
}

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