h2g2 The Hitchhiker's Guide to the Galaxy: Earth Edition

Limp, draw, ward, fads, cars, wear, cats, ware, teas, eras, sear- all words typed with all the fingers of one hand once, using touch type. But notice that limp is the only one for the right hand.

Until someone proves me wrong, of course.

Without going any further, if you've got 'limp', you've also got 'pip', 'pill' and 'lip'...

Noooo-

One finger each, once. That is to say all four fingers once each. They have to be four lettered words.

I should have mentioned, touch type QWERTY.

Or the reason why FRED is such a common choice for a four-letter password... type it now.

I've got 'plum', 'milk', 'kiln', 'yolk', 'hulk', 'inky', 'loin', 'lion', with my right hand only.

'Boil' and 'bulk' are also possible, although not everyone touch-types 'b' with their right. I use either hand, depending upon which key I've struck previously.