Thanks for your reply, I am afraid my question was a little ambiguous, I already knew the letters, as I know the alphabet from my student days but wanted to start at the beginning in order to make sure I didn't miss something crucial. However, I read the sentence as being "sigma and" "taf stop" with "taf stop" being together as a single entity like "red shoes".
I can now see where my problem lies and blame the lateness of the hour and my tiredness for not having realised before. The sentence needs a full stop (period) between "taf" and "stop", so that it becomes :
" Sigma and taf. Stop."
or, alternatively, a comma between "sigma" and "taf" with "and" coming between "taf" and "stop" giving :
"Sigma, taf and stop"
Thanks for your help. :-))
Edit: I did get the question right, which was why I didn't send a problem report but I can see now that maybe I should have done.
Yes, you are right. You'll see from the comments on this page that this is a mistake. Why she says "teliko" we don't know, (she has a mind of her own sometimes) but since we are still in Beta we can't edit yet. But if we delete we don't introduce the letter "s" in Greek. Feedback from the community is what helps us correct these errors and we thnk you for your contribution. Please send more.