Need formula instead of sorting

I have a spreadsheet that has original data. I originally used the array formula after sorting. But my application is different now. I can not use the sort function or any macros so it has to be a function or filter. Been playing with this one for a while but cant figure it out. Please see file. Also the array wont work if there is a gap in the data. The data needs to be in the final list (green) in order and only one of each can show. Basically I want to show only one of each value or item and then find the sum of that value.

Thanks