On-air challenge: Every answer today is a word, name, or phrase in which the only consonants are R and C, repeated as often as necessary. All the other letters are vowels. Last week's challenge ...

Last week's challenge ... Think of a well-known seven-letter geographical name in a single word that has just two consonants and yet is pronounced in five syllables. If you know the answer ...

For example: 'Words of one syllable, ending in a single consonant preceded by a single vowel, double the final consonant before a suffix beginning with a vowel. run -ing; running; big-est ...