puzzle number 44 I need help with the stamp stumper.thanks

All the stamps have to make completely differents shapes. The way to find them is:

1- Start at the top left corner and make a square (10, 20,20, 50).
2- The 3 stamps on the left hand side (10, 80, 10).
3- Next to the 10 in the bottom left corner is 70 join this to the 10 and 20 to make a small L shape.
4- In the far bottom right corner is 10 join the 30 to the left and the 40 and 20 above to make a longer L shape.
5- In the top right corner you need to make a S shape by using 60, 10, 10, 20.
6- Next match the 90 with the 10 that is to the right of it.
7- The 7th group should be formed and make an upside down T shape with 30, 30, 30, 10.
Hope this helps.