Combine all three finger columns while preserving the 4-5-6 home position.

Move individual fingers vertically and use the tactile 5 key whenever the hand loses position.

练习输入: 1, 2, 3, 4, 5, 6, 7, 8, 9

目标: 98.00% 准确率.

Three-Column Review Guided Entry: 147 258 369 741 852 963 123 456 789 159 357 951 753 486 264 918 273

Three-Column Review Accuracy Review: 123 321 456 654 789 987 147 258 369 951 753 159 357 486 264 816 294 573 681