import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
 
public class Main {
 
	public static void main(String[] args) throws NumberFormatException,
			IOException {
 
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		long testCases = Long.parseLong(br.readLine().trim());
		for (long i = 0; i < testCases; i++) {
 
			String[] split = br.readLine().trim().split(" ");
			long third = Long.parseLong(split[0]);
			long thirdLast = Long.parseLong(split[1]);
			long sum = Long.parseLong(split[2]);
 
			long n = (2L * sum) / (third + thirdLast);
			long d = (thirdLast - third) / (n - 5L);
			long a = third - 2L * d;
			System.out.println(n);
			for (long j = 0; j < n; j++) {
				System.out.print(a+" ");
				a+=d;
			}
			System.out.println();
		}
	}
 
}
 

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3
3 8 55
4 4 28
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