$list = [
            1 => 'ETH',
            2 => 'EOS',
            3 => 'BNB',
            4 => 'XLM',
            5 => 'XRP',
            6 => 'ETC',
            7 => 'BCC',
            8 => 'QKC',
            9 => 'VET',
            10 => 'LTC',
            11 => 'KEY',
            12 => 'ADA',
            13 => 'NEO',
            14 => 'TRX',
            15 => 'IOTA',
            16 => 'ZRX',
            17 => 'ARN',
            18 => 'ICX',
            19 => 'NAS',
            20 => 'MFT',
        ];

        $keyboard = new InlineKeyboard([]);

        for ($i = 1; $i <= count($list); $i++) {
            $keyboard->addRow([new InlineKeyboardButton([
                'text' => $list[$i], 'callback_data' => 'newOrder_' . $list[$i]
            ])]);
        }