(1) I have a little milk.
(2) I have little milk.
(3) I saw a little boy.
(4) * I saw little boy.
(5) A little alteration = (1)
(6) little alteration = (2)
(7) * a little alterations---(* a alterations + little)
(8) some little alterations---(some alterations + little)
What a peculiar the nature of "little"!