Hi!<br/>Could you please take a look and tell me whether this sentence is logical in English?<br/><br/>However, upon entering into force of the aforementioned regulations, the content <u>of</u> standards <u>of</u> subjects <u>of</u> study did not change on the merits. <br/><br/>Is it okay that there are three "of" so close to each other?<br/><br/>Thank you!