Shuffling an array not executing properly?

[4iwkoG1T]

Hi, there. I have a 2D array with 208. I must concatenate the strings by twos up to index 199.
So that I have 108 strings. Then I must shuffling these 108 strings.
The problem is that it isn't working right. After I concatenate the strings, then shuffle, several strings un concatenate again.
Ex:
born dramatic insurance gravy release frying
costume despair mission gibberish backyard abusive

I want to only concatenate the first 10 strings.
Result:
borndramatic insurancegravy releasefrying
costumedespair missiongibberish backyard abusive

Then shuffle:
abusive releasefrying backyard costumedespair
borndramatic missiongibberish insurancegravy

This is what my functions do:
abusive dramatic releasefrying gravy backyard costumedespair
borndramatic missiongibberish despair insurancegravy

It copies the second string again.

[4iwkoG1T]

I think the problem is in the concatenation function.

void Concatenation( char dest[208][13] )
  {
    for(int i=0; i<208 && i<200; i+=2)  // i < 208 concatenates all 208. 
                             // if I change to i < 200.  
     {
       myStrCat(dest[i],dest[i+1]); // myStrCat is equal to strcat().
       // cout << dest[i] << " "; // outputs the first 100.
     }
	
     
    for(int i=200; i<208; i++) 
     {
       // cout << dest[i] << " "; // outputs the last 8.
     }

void ShuffleArray( char destination[208][13] )
{
   char temp[13];
  
   for (int i = 0 ; i < 208 ; i++)
     { 
       int m = rand() % 108;   
       myStrCpy(temp,destination[m]);   // myStrCpy is strcpy()
       myStrCpy(destination[m],destination[i]);
       myStrCpy(destination[i],temp);
     }
    
     
}