#include<stdio.h>
#include<string.h>
int main()
{
	int n,a[26],b[26],len,len1,k;
	char ch[100],ch1[100];
	scanf("%d",&n);
	getchar();
	while(n--)
	{
		for(int i=0;i<26;++i)
		{
			a[i]=0;
			b[i]=0;
		}
			gets(ch);
			gets(ch1);	
			len=strlen(ch);
			for(int j=0;j<len;++j)
			{
					if(ch[j]=='a')
					a[0]+=1;
					else if(ch[j]=='b')
					a[1]+=1;
					else if(ch[j]=='c')
					a[2]+=1;
					else if(ch[j]=='d')
					a[3]+=1;
					else if(ch[j]=='e')
					a[4]+=1;
					else if(ch[j]=='f')
					a[5]+=1;
					else if(ch[j]=='g')
					a[6]+=1;
					else if(ch[j]=='h')
					a[7]+=1;
					else if(ch[j]=='i')
					a[8]+=1;
					else if(ch[j]=='j')
					a[9]+=1;
					else if(ch[j]=='k')
					a[10]+=1;
					else if(ch[j]=='l')
					a[11]+=1;
					else if(ch[j]=='m')
					a[12]+=1;
					else if(ch[j]=='n')
					a[13]+=1;
					else if(ch[j]=='o')
					a[14]+=1;
					else if(ch[j]=='p')
					a[15]+=1;
					else if(ch[j]=='q')
					a[16]+=1;
					else if(ch[j]=='r')
					a[17]+=1;
					else if(ch[j]=='s')
					a[18]+=1;
					else if(ch[j]=='t')
					a[19]+=1;
					else if(ch[j]=='u')
					a[20]+=1;
					else if(ch[j]=='v')
					a[21]+=1;
					else if(ch[j]=='w')
					a[22]+=1;
					else if(ch[j]=='x')
					a[23]+=1;
					else if(ch[j]=='y')
					a[24]+=1;
					else if(ch[j]=='z')
					a[25]+=1;
				}
		
			len1=strlen(ch1);
			for(int j=0;j<len1;++j)
				{
					if(ch1[j]=='a')
					b[0]+=1;
					else if(ch1[j]=='b')
					b[1]+=1;
					else if(ch1[j]=='c')
					b[2]+=1;
					else if(ch1[j]=='d')
					b[3]+=1;
					else if(ch1[j]=='e')
					b[4]+=1;
					else if(ch1[j]=='f')
					b[5]+=1;
					else if(ch1[j]=='g')
					b[6]+=1;
					else if(ch1[j]=='h')
					b[7]+=1;
					else if(ch1[j]=='i')
					b[8]+=1;
					else if(ch1[j]=='j')
					b[9]+=1;
					else if(ch1[j]=='k')
					b[10]+=1;
					else if(ch1[j]=='l')
					b[11]+=1;
					else if(ch1[j]=='m')
					b[12]+=1;
					else if(ch1[j]=='n')
					b[13]+=1;
					else if(ch1[j]=='o')
					b[14]+=1;
					else if(ch1[j]=='p')
					b[15]+=1;
					else if(ch1[j]=='q')
					b[16]+=1;
					else if(ch1[j]=='r')
					b[17]+=1;
					else if(ch1[j]=='s')
					b[18]+=1;
					else if(ch1[j]=='t')
					b[19]+=1;
					else if(ch1[j]=='u')
					b[20]+=1;
					else if(ch1[j]=='v')
					b[21]+=1;
					else if(ch1[j]=='w')
					b[22]+=1;
					else if(ch1[j]=='x')
					b[23]+=1;
					else if(ch1[j]=='y')
					b[24]+=1;
					else if(ch1[j]=='z')
					b[25]+=1;
				}
				k=1;
		for(int i=0;i<26;++i)
		{
			if(a[i]!=b[i])
			k=0;
		}
		if(k)
		printf("Yes\n");
		else
		printf("No\n");
	}
}