[Rosie] Indeed, not one team got those words correct. They did marginally better with "accommodation", "Massachusetts" and "knowledgeable". However, I think only 1 team got "diarrhoea" right. I've done much harder spelling rounds in the past; admittedly that was for quiz addicts, and once was deliberately written to prevent a certain team winning, because I knew they would play their joker on a spelling round. I put in words like "eschscholtzia", "waqf" etc. just to screw them up :-)
A mnemonic a teacher at school taught us several years ago: Dashing In ARush, Running Hard, Or Early Accident. You'll never forget how to spell diarrhoea again!