Is it possible to change if statement syntax in C#?

I'm new at C# Programming, I just wanna ask if is it possible to change if, else statement syntax in C#?

Example:

Instead of :

    a=5;
    b=6;
    if (a<b)
    {
    Console.WriteLine("Big");
    }
    else
    {
    Console.WriteLine("Small");
}//Output is Small

I would like to change if else statement syntax to other words:

 a=5;
    b=6;
    **say** (a<b)// say is "if"
    {
    Console.WriteLine("Big");
    }
    **but**// but is "else"
    {
    Console.WriteLine("Small");
}//Output is Small

I wanna type it in the textbox and display it in the label How to do this?

I'm hoping for your help, thank you.