Populating subcategory cells with adjacent text from category cells

[MrRed]

I have a rather tricky little problem. Not sure if it's best in this forum or another one.

Anyway, I have a spreadsheet with about 10,000 records.

Ignoring all the irrelevant stuff, I have 3 important columns.

Every cell in column A is either the word Category or Subcategory. Under every cell that says Category, there are 2 or 3 or 4 cells that say Subcategory.

So for example, column A for the first few records look like:

Category
Subcategory
Subcategory
Category
Subcategory
Subcategory
Subcategory
Category
Subcategory
Subcategory
Subcategory
Subcategory

etc.

In Column B, (if it says Category in A), there is a piece of text. If it says Subcategory there is nothing. Column C is empty whatever is in A.

Now comes the tricky bit.

What I want is, for every Subcategory under a Category, I want the text that is next to Category in B to be in column C for the Subcategories.

In other words:

If the spreadsheet just had these records and it looked like this:

Column A Column B Column C

Category (TEXT A) (Empty)
Subcategory (Empty) (Empty)
Subcategory (Empty) (Empty)
Category (TEXT B) (Empty)
Subcategory (Empty) (Empty)
Subcategory (Empty) (Empty)
Subcategory (Empty) (Empty)
Category (TEXT C) (Empty)
Subcategory (Empty) (Empty)
Subcategory (Empty) (Empty)
Subcategory (Empty) (Empty)
Subcategory (Empty) (Empty)

I was hoping to create some sort of macro or code that I could run and it would change the spreadsheet to:

Column A Column B Column C

Category (TEXT A) (Empty)
Subcategory (Empty) (TEXT A)
Subcategory (Empty) (TEXT A)
Category (TEXT B) (Empty)
Subcategory (Empty) (TEXT B)
Subcategory (Empty) (TEXT B)
Subcategory (Empty) (TEXT B)
Category (TEXT C) (Empty)
Subcategory (Empty) (TEXT C)
Subcategory (Empty) (TEXT C)
Subcategory (Empty) (TEXT C)
Subcategory (Empty) (TEXT C)

It might be impossible but I thought I would give it a try and see if anyone could help. Remember there are about 10,000 records.

Cheers

[MrRed]

Never mind, I sorted it out myself - just use F5.