Hey I Need to Ask a Question. Answer Needed Quick :-)

Quick Answers are appreciated.

So, I have a doubt , can we make words like this?

Lets say there's this word

S

H

E

L

L

And I add

I S

T H

E

L

L

So it would give me both the points of it and is right? And as far as th stands it can be extended to make that or this etc...

I need to know if this is right or wrong