the user wants to input the first high frequency combination he she can operate as indicated in step a 51 if the user wants to input the second high frequency combination displayed in a difference manner he she can operate as indicated in step a 52 if the user wants to input another combination other than the two combinations he she can slide to select from all possible combinations in the pull down dialog box this process is shown in step a 53 of the flow chart of fig5 fig2 4 illustrates that the user selects the input by sliding starting from the time when the user slides downwards from the space bar zone to the position on the circle the system displays all possible combinations as shown in fig2 5 fig2 6 illustrates the process that the user slides up and down with his her fingers or a input pen to select from all possible combinations by default the mmi in the present invention prompts one alternative word to minimize the disturbance to the user 39 s sight of course the mmi provided in the present invention can also be set to display two alternative words or directly list all alternative words as shown in fig2 5 the difference to the display in fig2 5 lies in the first frequency word is displayed in the first line and the rest words are displayed under the first line in sequence fig3 shows a combination of circular and square frame there are four corner zones zone 1 2 3 and 4.