Related Clues:

• Frequently, at short intervals
• Frequently, many times
• '. . . in the stilly night' (Moore)
• ''... in the stilly night'' (Moore melody)
• Many a time and T's?
• Much of the time it's X's, it seems
• It's usually X's, perhaps
• Perhaps T's in the chilly night
• Met Al with a letter at last in a hundred more
• X's been left alone, by the sound of it
• That's a satisfactory bargain, and plenty of it
• That''s usually X''s, it seems
• T's frequency?
• That's usually X's, it seems
• In the usual way, one foot in one