hide or unhide rows based on text within a drop down list

Good day,

I'm new to this forum and to excel VBA functions and I require some assistance.

I am trying to get my worksheet to hide or unhide rows based on text in a drop down list that was completed via Data Validation list. I have attached the file.

So....
Based on user selection in A6:I6 (merged cell),

"PRP" - I need rows 26:28, 39,40,50,51,61,62,72,73, 90:120 hidden.
"SGP" - I need rows 26:28, 41,42,52,53,63,64,74,75, 90:120 hidden.
"SEP" - I need rows 39,40,50,51,61,62,72,73 hidden
"LLW" - I need rows 26:28, 41,42,52,53,63,64,74,75, 90:120 hidden
"TOP" - Want all rows to be shown