Alpha Cipher

The letters A to Z have each been allocated a different number between 1 and 26. The number next to each word in this list is the sum total of the letter values in that word. So, for example, in GUY, G might equal 21, U 25 and Y 1, or G might be 13, U 18 and Y 16, or any other combination adding up to 47. We’ve placed some starter letters in the grid at the bottom — can you work out the values of the rest?