Inversion or contradiction?

Hello, everyone?

I have following question, about which I would like to invite your as many replies as possible;

A. There isn't any milk left.

B. There should be no space left.

1. Above A and B are a kind of inversion forms due to adverb - 'there' or a

contracted formsIf ff ue to abbreviation of 'which is' between the noun and p.p.(= left)?

2. If they are inversion forms, original ones are as follows;

A. Any milk isn't left.

B. No space should be left.

Then why are following inversion forms not applied?;

A. There isn't left any milk.

B. There should be left no space.

This one is very difficult for me to show you my answer in advance.

Thanks in advance,