Regex to filter words containing english alphabets

[dipeshtech]

I have text expressions something like as mentioned below. I want to filter only words with English alphabets (i.e no special chars, no operators, no quotes ...etc)

As an output, i expect words like this:

Input:

Buy 1 lakh SMS at 5p/SMS & Get 1lakh Data & keyword for 2 months free. Pay Rs.2000 more & Get a Dynamic 15 pages WebSite. Call 9811968238.

Output:

Buy lakh SMS at SMS Get lakh Data keyword for months free Pay Rs more Get Dynamic pages WebSite Call

QFile file("E:\\SMS\\dout.csv");
file.open(QIODevice::ReadWrite | QIODevice::Text);
QTextStream out(&file);
out << "This file is generated by Qt\n\n\n";
 
    QFile file2("E:\\SMS\\CCHECK.txt");
    file2.open(QIODevice::ReadWrite | QIODevice::Text);
    QTextStream cc_in(&file2);
 
    QString chk_ln = cc_in.readLine();
 
    while(!chk_ln.isNull())
    {
        //Problem in below line
        QStringList list2 = chk_ln.split(QRegExp("\\W+"), QString::SkipEmptyParts); 
 
        for (int i = 0; i < list2.size(); ++i)
        {
            out<<list2[i]<<"  ";
 
        }
        out<<"\n";
 
        chk_ln = cc_in.readLine();
    }

QFile file("E:\\SMS\\dout.csv");
file.open(QIODevice::ReadWrite | QIODevice::Text);
QTextStream out(&file);
out << "This file is generated by Qt\n\n\n";

    QFile file2("E:\\SMS\\CCHECK.txt");
    file2.open(QIODevice::ReadWrite | QIODevice::Text);
    QTextStream cc_in(&file2);

    QString chk_ln = cc_in.readLine();

    while(!chk_ln.isNull())
    {
        //Problem in below line
        QStringList list2 = chk_ln.split(QRegExp("\\W+"), QString::SkipEmptyParts); 
        
        for (int i = 0; i < list2.size(); ++i)
        {
            out<<list2[i]<<"  ";

        }
        out<<"\n";

        chk_ln = cc_in.readLine();
    }

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Any help is appreciated !!