Hi, Sorry, I don't know. Perhaps someone else can tell you. This seems to be a topic that fascinates a lot of people who are learning English. eg What is the longest word? But I think that most native speakers have absolutely no

Readers may know of this already, in which case, my apologies. My sister has just challenged me to find the longest word one can text on a pocket telephone using only the first press on each key. I assume any key may be used any number of times.