char ** stringMatching(char ** words, int wordsSize, int* returnSize){
char** arr = (char**)calloc(wordsSize,sizeof(char*));
int n =0;
for (int i=0; i<wordsSize; i++)
{
for (int j=0; j<wordsSize; j++)
{
if (i == j) continue;
if (strstr(words[j],words[i]))
{
arr[n++] = words[i];
break;
}
}
}
*returnSize = n;
return arr;
}