Are there any macros or ways to highlight all the lines enclosed by two types of symbols?

Hello everyone.

I want to find a macro or a way to highlight all lines enclosed by two types of symbols.

For example,

the document:
Line 1
!!!
Line 3
Line 4
Line 5
Line 6
Line 7
Line 8
Line 9
!!!
Line 11
Line 12
Line 13
Line 14

After executing the macro or do the steps:
Line 1
!!!
Line 3(Line To be Highlighted)
Line 4(Line To be Highlighted)
Line 5(Line To be Highlighted)
Line 6(Line To be Highlighted)
Line 7(Line To be Highlighted)
Line 8(Line To be Highlighted)
Line 9(Line To be Highlighted)
!!!
Line 11
Line 12
Line 13
Line 14

Thank you very much.

I want to solve this problem for a long period of time!

Sorry I forget to mention that I want to do it in Microsoft Word instead of Microsoft Excel