Many years ago when a person who owed money could be thrown into jail, a merchant in London had the misfortune to owe a huge sum (イ) a money-lender. ..... 'Oh, how clumsy (ロ) me,' she said, 'but never mind -- if you look into the bag you will be able to tell which pebble I took by the colour of the one that is left.' *iolep