#include<cstdio>
#include<string.h>
#include<algorithm>
using namespace std;
int cmp(int a,int b){
	return a>b;
}
int cmp2(int a,int b){
	if(a%10==b%10)
		return a<b;
	return a%10<b%10;
}
int n,m;
int dp[31];
int main(){
	int i,j,t,T,a,b,x[31],y[31];
	
	//freopen("1.in","r",stdin);
	//freopen("2.out","w",stdout);
	scanf("%d",&T);
	for(t=1;t<=T;t++){
		scanf("%d %d",&a,&b);
		for(i=1;i<=a;i++)
			scanf("%d",&x[i]);
		for(i=1;i<=b;i++)
			scanf("%d",&y[i]);
		sort(x+1,x+a+1,cmp);
		sort(y+1,y+b+1,cmp);
		int aa=unique(x+1,x+a+1)-x-1;
		int bb=unique(y+1,y+b+1)-y-1;
		memset(dp,0,sizeof(dp));
		int ans=0,pos;
		for(i=1;i<=aa;i++)
			for(j=bb;j>=1;j--){
				if(x[i]==y[j]){
					dp[j]=dp[j-1]+1;
					if(dp[j]>ans){
						ans=dp[j];
						pos=j-ans+1;
					}
					else if(dp[j]==ans){
						if(y[pos]<y[j-ans+1])
							pos=j-ans+1;
					}
				}
				else
					dp[j]=0;                  //我在这里WA死了
			}
		if(ans==0){
			printf("NONE\n");
			continue;
		}
		for(i=pos;i<=pos+ans-1;i++)
			printf("%d ",y[i]);
		printf("\n");
		sort(y+pos,y+pos+ans,cmp2);
		for(i=pos;i<=pos+ans-1;i++)
			printf("%d ",y[i]);
		printf("\n");
	}
}