в течение следующих трех дней ни Фи

в течение следующих трех дней ни Филипп, ни он не видели друг друга

Results (English) 1:

over the next three days neither Philip nor he have not seen each other

Results (English) 2:

over the next three days, nor Philip nor he did not see each other

Results (English) 3:

During the following three days neither Philippe, neither he had not seen each other