@f.{1} nat b b
@f.{1} nat (@f.{1} nat b a) a
replace1.lean:15:9: error: #replace commad failed
@f.{1} nat x x
@f.{1} bool x x
replace1.lean:29:9: error: #replace commad failed
@eq.rec.{0 1} nat a (λ (x : nat), p x) H1 b (@eq.refl.{1} nat a)
@eq.rec.{0 1} nat a (λ (x : nat), p x) H1 a (@eq.refl.{1} nat a)
replace1.lean:40:9: error: #replace commad failed
λ
(v₁ v₂ :
  bv
    (@bit1.{1} nat nat_has_one nat_has_add
       (@bit1.{1} nat nat_has_one nat_has_add (@bit0.{1} nat nat_has_add (@one.{1} nat nat_has_one))))),
  @eq.{1}
    (bv
       (@bit1.{1} nat nat_has_one nat_has_add
          (@bit1.{1} nat nat_has_one nat_has_add (@bit0.{1} nat nat_has_add (@one.{1} nat nat_has_one)))))
    v₁
    v₂