And the meaning corresponds to the 1 format is single, not so many trying clearly native speakers of that mean usage becomes extremely difficult Japan language learners.
And, meaning corresponding to that one form is not a single, because it is a large number, the meaning usage of native speakers is known by different clearly is a problem very difficult for foreign learners of Japanese.
Then, in a form corresponding means a single, not because the number of native speakers use clear its meaning and usage of foreign learners of Japanese is very difficult problem.