#include <stdio.h>
#include <stdlib.h>

void readline( char * a , char * b , int *la , int *lb ){

    *la = 0;
    *lb = 0;

    char ch;

    while ( (ch = getchar()) != ' ' ) {
        a[(*la)++] = ch;
    }
    a[*la] = '\0';

    while ( (ch = getchar()) != '\n' ) {
        b[(*lb)++] = ch;
    }
    b[*lb] = '\0';

}

void reduce ( char *a , int l ) {

    int i , j , k , flag = 0;
    int index = 0;

    for ( i = 0 ; i < l ;i++ ) {

        k = i;
        flag = 0;

        for ( j = 0 ; j <= index ; j++ ) {
            if ( a[j] == a[k] ) {

            }
            else {
                index = i;
                flag = 1;
                break;
            }
            k++;
        }
        if ( flag == 0 )
            i = k-1;
    }

    a[index+1] = '\0';
}

int main ( int argc ,char * argv[] ) {

    int t;
    char * a , * b ;
    scanf("%d" , &t);
    getchar();

    a = (char *) malloc ( 100010 );
    b = (char *) malloc ( 100010 );

    while ( t-- ) {

        int la = 0 , lb = 0;
        readline(a,b,&la,&lb);

        if ( la > lb ) {
            char * c = a;
            a=b;
            b=c;

            int temp = la;
            la = lb;
            lb = temp;
        }

        int i = 0 , j = 0;

        /*while ( 1 ) {
            if ( i == la - 1 && j == lb - 1 ) {
                printf("YES\n");
                break;
            }
            if ( a[i] == b[j] ) {
                i = (i + 1) % la;
                j = (j + 1) % lb;
            }
            else {
                printf("NO\n");
                break;
            }

        }*/

        reduce(a,la);
        reduce(b,lb);

        i = 0;
        while ( a[i] != '\0' && b[i] != '\0' ) {
            if ( a[i] != b[i] )
                break;
            i++;
        }

        if ( a[i] == b[i] && a[i] == '\0' )
            printf("YES\n");
        else
            printf("NO\n");

    }
    free(a);
    free(b);

    return 0;
}