YOU SAID:

I have been studying for six hours a day for this exam period

INTO JAPANESE

この試験期間のため 1 日 6 時間の勉強しています

BACK INTO ENGLISH

For a trial period of 6 hours per day studying

INTO JAPANESE

6 日の勉強時間の試用期間

BACK INTO ENGLISH

6 day study time trial

INTO JAPANESE

6 日間の勉強時間の試験

BACK INTO ENGLISH

6-day study time trials

INTO JAPANESE

6 日の調査時間の試験