private void getWordString() {
        int row1 = 0;
        int col1 = 0;
        int length1 = 0, length2 = 0;
        String word_last = "";
        boolean isCanceled = false;

        ArrayList<String> newWords = new ArrayList<>();

        for (GridLetter gridLetter : gridLettersTemp) {

            int row = gridLetter.getRow();
            StringBuilder word;
            for (int a = 0; a < gridLetter.getRow(); a++) {
                int position = row * 15 + gridLetter.getCol() - a;
                TextView txtLetter = scrabble.getChildAt(position)
                        .findViewById(R.id.gridLetter);
                if (txtLetter.getText().toString().equals("")) {
                    col1 = (int) scrabble.getChildAt(position)
                            .getTag(R.string.col) + 1;
                    break;
                }
            }
            word = new StringBuilder();
            for (int a = 0; a < 15 - col1; a++) {
                int position = row * 15 + col1 + a;
                TextView txtLetter = scrabble.getChildAt(position)
                        .findViewById(R.id.gridLetter);
                word.append(txtLetter.getText().toString());
                if (txtLetter.getText().toString().equals("")) {
                    length1 = word.length();
                    if (word.length() > 1 && !word.toString().equals(word_last)) {
                        word_last = word.toString();
                        if (!words.contains(word_last)) {
                            newWords.add(word_last);
                        } else {
                            isCanceled = true;
                            break;
                        }
                    }
                    break;
                }
            }

            word = new StringBuilder();

            int col = gridLetter.getCol();
            for (int a = 0; a < gridLetter.getRow(); a++) {
                int position = row * 15 + col - 15 * a;
                TextView txtLetter = scrabble.getChildAt(position)
                        .findViewById(R.id.gridLetter);
                if (txtLetter.getText().toString().equals("")) {
                    row1 = (int) scrabble.getChildAt(position)
                            .getTag(R.string.row) + 1;
                    break;
                }
            }
            for (int a = 0; a < 15 - row1; a++) {
                int position = row1 * 15 + col + 15 * a;
                TextView txtLetter = scrabble.getChildAt(position)
                        .findViewById(R.id.gridLetter);
                word.append(txtLetter.getText().toString());
                if (txtLetter.getText().toString().equals("")) {
                    length2 = word.length();
                    if (word.length() > 1 && !word.toString().equals(word_last)) {
                        word_last = word.toString();
                        if (!words.contains(word_last)) {
                            newWords.add(word_last);
                        } else {
                            isCanceled = true;
                            break;
                        }
                    }
                    break;
                }
            }
        }

        if (isCanceled) {
            cancelMove();
        } else {
            if (length1 == 1 && length2 == 1) {
                cancelMove();
            } else {
                if (newWords.size() > 0) {
                    boolean canceled = false;
                    Set<String> words_final = new HashSet<>(newWords);
                    for (String word : words_final) {
                        if (!dictionary.contains(word.toLowerCase())) {
                            canceled = true;
                            break;
                        }
                    }
                    if (!canceled) {
                        alertDialog.show();

                        boolean cross = false;

                        if (!isFirstMove) {
                            for (GridLetter gridLetter : gridLettersTemp) {
                                for (GridLetter gridLetter1 : gridLetters) {
                                    if ((gridLetter.getRow() - 1 == gridLetter1.getRow()
                                            || gridLetter.getRow() + 1 == gridLetter1.getRow())
                                            && (gridLetter.getCol() - 1 == gridLetter1.getCol()
                                            || gridLetter.getCol() + 1 == gridLetter1.getCol())) {
                                        cross = true;
                                        break;
                                    }
                                }
                            }
                        } else {
                            cross = true;
                        }

                        if (cross) {
                            setLetters();
                            gridLetters.addAll(gridLettersTemp);

                            if (isFirstMove) isFirstMove = false;

                            int score = 0;
                            for (String word : newWords) {
                                mDatabase.child("sessions").child(sessionId).child("words").push().setValue(word);
                                for (int i = 0; i < word.length(); i++) {
                                    score += scores[letters.indexOf(word.charAt(i))];
                                }
                            }

                            for (GridLetter gridLetter : gridLettersTemp) {
                                mDatabase.child("sessions").child(sessionId).child("letters").push().setValue(gridLetter);
                            }
                            gridLettersTemp.clear();
                            mDatabase.child("sessions").child(sessionId).child("users").child(String.valueOf(userId))
                                    .child("score").setValue(currentUser.getScore() + score);
                            clearPasses();
                        } else {
                            alertDialog.dismiss();
                            cancelMove();
                        }

                    } else {
                        alertDialog.dismiss();
                        cancelMove();
                    }
                }
            }
        }
    }