Dv

Size: a a a
Dv

E
Dv
Dv
E

Dv
M
SS

Dv
Dv
Dv
МБ
[(eval (apply pat) (term_1 σ_1) Succ (term_2 σ_2))
(where σ_3 (insert x term_2 σ_2))
-------------------------------------------------- "let_1"
(step (let x pat) (term_1 σ_1) Succ (term_2 σ_3))]
SS
PS
МБ
МБ
K
K
MB
PS