Write a 1-line model of
II ← {+⌿∧⍀⍺∘.≠⍵} 'Mississippi' II 'sim' 2 1 11 x II x←'Mississippi' 0 1 2 2 1 2 2 1 8 8 1 II⍨ x 0 1 2 2 1 2 2 1 8 8 1