What is always in front of you but can’t be seen?

Let's play a word game. Following are some meaningless words that can be completed by adding random letters on either side of the word.

For example, the word "rdo" can be formed into "pardon".

Using the same technique, can you complete the given words?
ecalc
airb
rinci
tibac
uidel
gorit
igna
eyho

When I got four, I have it none.
When I got two, I have it some.
When I got none, I have it all.

What is it?

I have eight fingers and two thumbs but I do not live. What Am I?

There is something which is always coming but never arrives?

What can you catch but never throw?

I have a mouth but I don't eat.
I have a bank but have no money.
I have a bed but i dont sleep.
I wave but have no hands.

Who Am I ?

Can you name some countries which do not have the alphabet 'A' in them?

How can you leave a room with two legs and return with six legs?

If there are fifteen crows on a fence and the farmer shoots a third of them, how many crows are left?