Rather than pen and paper I recommend using a computer if you have access to one. (-⟜»∘⍷∧)⍟(1+↕3) 11‿39‿23‿28‿31‿19‿32‿5‿1‿9 ⟨ ⟨ 1 4 4 2 8 4 5 3 1 7 ⟩ ⟨ 1

Rather than pen and paper I recommend using a computer if you have access to one. (-⟜»∘⍷∧)⍟(1+↕3) 11‿39‿23‿28‿31‿19‿32‿5‿1‿9 ⟨ ⟨ 1 4 4 2 8 4 5 3 1 7 ⟩ ⟨ 1 1 1 1 1 2 1 ⟩ ⟨ 1 1 ⟩ ⟩ -⟜»∘⍷∧ vec ⟨ 7 2 4 1 3 2 2 4 10 12 3 10 1 6 1 5 17 2 8 ⟩ +´-⟜»∘⍷∧ vec 100 ⍷∧ vec ⟨ 7 9 13 14 17 19 21 25 35 47 50 60 61 67 68 73 90 92 100 ⟩ +`-⟜»∘⍷∧ vec ⟨ 7 9 13 14 17 19 21 25 35 47 50 60 61 67 68 73 90 92 100 ⟩