It has not been answered - the website suggested did not give one of these answers and the reply just stops people who might know the answer from replying. If you think you have answered the above then please give the answers if not please desist from answering.
Not wanting to appear rude but I can never understand people who answer questions when they clearly do not know the right answer. All they do is confuse and stop people who do have the answer focusing on the unanswered questions.
You entitled this thread "Abbreviations". Therefore, that's what people would think you actually meant. Therefore, in e.g. a quiz about abbreviations (of which there are many), 13 MON would imply that question 13 is "MON", for which "Monaco" is a perfectly reasonable answer.
Not, it appears that you meant "Ditloids", not "Abbreviations". It is you who caused the confusion, not those who attempted an answer at your incorrect question...