using System;
using System.Text.RegularExpressions;
public class Test
{
public static void Main()
{
var input = "---Three dashes a-b-c-d";
string result = Regex.Replace(input, @"\G-", "$0 ");
Console.WriteLine(result);
}
}
dXNpbmcgU3lzdGVtOwp1c2luZyBTeXN0ZW0uVGV4dC5SZWd1bGFyRXhwcmVzc2lvbnM7CgpwdWJsaWMgY2xhc3MgVGVzdAp7CglwdWJsaWMgc3RhdGljIHZvaWQgTWFpbigpCgl7CgkJdmFyIGlucHV0ID0gIi0tLVRocmVlIGRhc2hlcyBhLWItYy1kIjsKCSAgICBzdHJpbmcgcmVzdWx0ID0gUmVnZXguUmVwbGFjZShpbnB1dCwgQCJcRy0iLCAiJDAgIik7CiAgICAgICAgQ29uc29sZS5Xcml0ZUxpbmUocmVzdWx0KTsKCX0KfQo=