let counterWin = 0;
        let winIndex = null;
        for (let i = 0; i < WINNING_COMBINATION.length; i++) {
            counterWin = 0;
            indexWin = null;
            for (let index of WINNING_COMBINATION[i]) {
                if (cellElements[index].classList.contains(CIRCLE_CLASS)) {
                    counterWin++;
                } else if (cellElements[index].classList.length != 2) {
                    winIndex = index;
                }

                if (counterWin == 2) {
                    if (winIndex == null) {
                        continue;
                    }
                    break;
                }
            }

            if (winIndex != null && counterWin == 2) {
                break;
            }
        }

        return counterWin == 2 ? winIndex : null;
    }