Unlike virtually every computer system in the world which uses a variant of ASCII, IBM mainframes and midrange systems such as the AS/400 tend to use a wholly incompatible character set primarily designed for ease of use on punched cards. (For an excellent page on punched cards, see Doug Jones's Punched Card Codes).
There are a few Keurig K-cups that DO contain calories. They fall under two categories. Brew Over Ice teas and coffees (except Twinings) and Cafe Escapes. Keurig has kept those around 60 calories each. When in doubt consider the consistency of the coffee. If it is creamy- it contains calories and most likely sugar. If it is a simple black coffee, calories are not an issue.
A regular cup of black coffee has only 5 calories. The number of calories in creamer depends on if you use plain nondairy creamer, half-and-half, cream, flavored creamer, etc. One teaspoon of plain, nondairy (liquid) creamer only has 7 calories. One teaspoon of sugar has 16 calories, so two teaspoons have 32 calories. The total number of calories in a regular cup of coffee with 1 teaspoon of nondairy (liquid) creamer and 2 teaspoons of sugar is therefore, 44 calories.