Six persons, Ankit, Billu, Chand, Dev, Jay and Kim, go to the same library. The six persons go to the library once every two days, three days, four days, five days, six days and seven days, not necessarily in the same order. It is known that, during the month of April, i each person went to the library on at least five days during the month. ii. all the six persons went to the library on the same day at least once between the 10th and 15th of the month (both days inclusive). ill on at least one day, Chand and Kim were the only persons who did not go to the library iv on all the days that Ankit or Jay went to the library, Billu also went to the library and on at least three days that Jay went to the library, Ankit did not go to the library v on at least four days that Chand went to the library, at least one more person went to the library