DETERMINER

Of is not used before either, neither, each and every when singular nouns follow them but of is used when they are followed by plural noun.

(i)  Neither John nor Zerin did the work.(Not neither of John )
(ii) Neither of the students got any prize.
(iii) Either of the students faced difficulty in understanding the poem.

Combination of Group A and  Group B determiners:

Some limited number of determiners like few, a few, little, least, many and most are used as follows:

(i) A few boys took part in the competition. 

(ii) A little milk is left for you.

(iii) The least time he got was very tough.

(iv) The most toys were very costly.

The determiners others, such, what, and only are Grouped in C category.

* Only and other come after Group A determiner :

   (i)  Their other cousin will reach tomorrow.

   (ii) This is the only chance of winning the game.

*  Indefinite articles comes after such and what :

   (i)  Such a beautiful sight is very rare

   (ii) What a shame! he was charged of theft.