The word "MECCU" is a bit tricky when it comes to its spelling. It is pronounced as /ˈmɛku/ which means that the first two letters "ME" are said as the short "e" sound followed by a hard "k" sound. The "CC" represents a double "C" which emphasizes the "k" sound as well. And finally, the last letter "U" is pronounced as "oo" just like the "u" sound in the word "moon". So, to spell "MECCU" correctly, one must remember its unique pronunciation pattern.