Complete the summary below.
Write NO MORE THAN THREE WORDS for each answer.

In 1932 August Dvorak solved the inefficiency problem by re-designing the [1] of the typewriter. He put the most commonly used letters on the home row. Using the Dvorak keyboard, over 3,000 words or [2] of all work can be done from the home row. In contrast, only [3] can be typed from the home row on the QWERTY keyboard. Other advantages of the Dvorak keyboard include a 50% improvement in [4] and a 15 - 20% increase in [5]. But the most important difference is in finger movement.

Typists using the QWERTY keyboard moved their fingers [6] miles per day compared to one mile a day for Dvorak typists.