You can do something like this:
function serverCmdOOC(%client,%a,%b,%c,%d,%e,%f,%g,%h,%i,%j,%k,%l,%m,%n,%o,%p,%q,%r,%s,%t,%u,%v,%w,%x,%y,%z)
{
%client.chat = true;
%argList = "abcdefghijklmnopqrstuvwxyz";
%length = strLen(%argList);
for(%int=0;%int<%length;%int++)
{
eval("%currWord = %" @ getSubStr(%argList,%int,1) @ ";");
%message = %message SPC %currWord;
}
if(%message !$= "")
{
%message = trim(%message);
serverCmdMessageSent(%client,%message);
}
}