Definition ListToCP {T : Type} (l : list T) (Default : T) : cartesianPower T (length l).

Lemma ListToCPTl {T : Type} :
forall (a a0 : T) l (Ha0l : (S (length l)) = length (a0  :: l)) Haa0l Default,
tailCPbis (length (a :: a0 :: l)) (length (a :: l)) (ListToCP (a :: a0 :: l) Default) Haa0l Ha0l =
ListToCP (a0 :: l) Default.