// var numbers = [1, 15, 7, 3, 8, 8, 19, 5, 12, 8, 2, 6, 8];
var numbers = [1, 15, 8, 8, 8, 8, 7, 3, 19, 5, 12, 2, 6];
 
var counter = 1;
var index = 0;
var prev, next;
if (numbers.length > 0) { 
    prev = numbers[index++];
}
 
while (index < numbers.length && counter < 4) {
    next = numbers[index++];
    if (prev == next) { 
        counter++;
    }
    else {
        counter = 1;
        prev = next;
    }
}
 
if (counter == 4) { 
    print("Found four times repeated number");
}
else { 
    print("No four times repeated number found");
}

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