Looks like you just need 4 strings. Perhaps something like this would do :
struct KeyValues
{
public string sType1;
public string sType2;
public string sType3;
public string sType4;
}
and you can declare the array as :
KeyValues[] values = new KeyValues[]
{
new KeyValues(){ sType1 = "0", sType2 = "A", sType3 = "T", sType4 ="V" },
new KeyValues(){ sType1 = "1", sType2 = "A", sType3 = "X", sType4 ="V" },
new KeyValues(){ sType1 = "2", sType2 = "A", sType3 = "T", sType4 ="X" }
};
http://blog.voidnish.com