diff --git a/src/Categories/Examples/Monad/Sets.agda b/src/Categories/Examples/Monad/Sets.agda
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+{-# OPTIONS --safe --without-K #-}
+module Categories.Examples.Monad.Sets where
+
+open import Category.Monad using (RawMonad)
+import Data.List as List
+import Data.List.Properties
+open import Relation.Binary.PropositionalEquality using (refl; sym)
+
+open import Categories.Category.Instance.Sets
+open import Categories.Monad using (Monad)
+open import Categories.NaturalTransformation using (ntHelper)
+
+import Categories.Examples.Functor.Sets as F
+
+Raw : ∀ {o} (M : Monad (Sets o)) → RawMonad (Monad.F.F₀ M)
+Raw M = record
+  { return = Monad.η.η M _
+  ; _>>=_ = λ Ma f → Monad.μ.η M _ (Monad.F.F₁ M f Ma)
+  }
+
+List : ∀ {o} → Monad (Sets o)
+List = record
+  { F = F.List
+  ; η = record
+    { η = λ _ → List.[_]
+    ; commute = λ _ → refl
+    ; sym-commute = λ _ → refl
+    }
+  ; μ = ntHelper record
+    { η = λ _ → List.concat
+    ; commute = λ _ {x} → concat-map x
+    }
+  ; assoc = λ {_} {x} → concat-concat x
+  ; sym-assoc = λ {_} {x} → sym (concat-concat x)
+  ; identityˡ = concat-[-] _
+  ; identityʳ = ++-identityʳ _
+  }
+  where
+    open Data.List.Properties