using System;
using System.Text.RegularExpressions;
public class Test
{
public static void Main()
{
String input = "Hello World 12 7";
string[] substrings = Regex.Split(input, "(?i) (?![a-z])");
foreach (String str in substrings)
{
System.Console.WriteLine(str);
}
}
}
dXNpbmcgU3lzdGVtOwp1c2luZyBTeXN0ZW0uVGV4dC5SZWd1bGFyRXhwcmVzc2lvbnM7CgpwdWJsaWMgY2xhc3MgVGVzdAp7CglwdWJsaWMgc3RhdGljIHZvaWQgTWFpbigpCgl7CgkJU3RyaW5nIGlucHV0ID0gIkhlbGxvIFdvcmxkIDEyIDciOwoKICAgICAgICBzdHJpbmdbXSBzdWJzdHJpbmdzID0gUmVnZXguU3BsaXQoaW5wdXQsICIoP2kpICg/IVthLXpdKSIpOwogICAgICAgIAogICAgICAgIGZvcmVhY2ggKFN0cmluZyBzdHIgaW4gc3Vic3RyaW5ncykKICAgICAgICB7CiAgICAgICAgICAgIFN5c3RlbS5Db25zb2xlLldyaXRlTGluZShzdHIpOwogICAgICAgIH0KICAgICAgICAKCX0KfQ==