lets
+ let <hidden>
| ` <*>
|   + <*>
|   | + <*>
|   | | + pure (\u1 -> (\u2 -> u1))
|   | | ` pure (\u1 -> u1)
|   | ` <*>
|   |   + <*>
|   |   | + pure ((\u1 -> (\u2 -> (\u3 -> (u1 u3) u2))) (\u1 -> (\u2 -> u1 u2)))
|   |   | ` pure Term
|   |   ` ref <hidden>
|   ` pure Term
+ let <hidden>
| ` <*>
|   + ref <hidden>
|   ` pure Term
+ let <hidden>
| ` <|>
|   + <*>
|   | + <*>
|   | | + pure (\u1 -> (\u2 -> (\u3 -> u1 (u2 u3))))
|   | | ` <*>
|   | |   + <*>
|   | |   | + pure (\u1 -> (\u2 -> (\u3 -> (u1 u3) u2)))
|   | |   | ` pure (\u1 -> (\u2 -> u1))
|   | |   ` satisfy
|   | ` rec <hidden>
|   ` pure (\u1 -> u1)
+ let <hidden>
| ` <|>
|   + <*>
|   | + <*>
|   | | + pure (\u1 -> (\u2 -> (\u3 -> u1 (u2 u3))))
|   | | ` <*>
|   | |   + pure cons
|   | |   ` <*>
|   | |     + <*>
|   | |     | + pure (\u1 -> (\u2 -> u1))
|   | |     | ` conditional
|   | |     |   + look
|   | |     |   | ` satisfy
|   | |     |   + branches
|   | |     |   | + <*>
|   | |     |   | | + <*>
|   | |     |   | | | + pure (\u1 -> (\u2 -> u1))
|   | |     |   | | | ` pure Term
|   | |     |   | | ` satisfy
|   | |     |   | + <*>
|   | |     |   | | + <*>
|   | |     |   | | | + pure (\u1 -> (\u2 -> u1))
|   | |     |   | | | ` pure Term
|   | |     |   | | ` satisfy
|   | |     |   | + <*>
|   | |     |   | | + <*>
|   | |     |   | | | + pure (\u1 -> (\u2 -> u1))
|   | |     |   | | | ` pure Term
|   | |     |   | | ` satisfy
|   | |     |   | + <*>
|   | |     |   | | + <*>
|   | |     |   | | | + pure (\u1 -> (\u2 -> u1))
|   | |     |   | | | ` pure Term
|   | |     |   | | ` satisfy
|   | |     |   | + <*>
|   | |     |   | | + <*>
|   | |     |   | | | + pure (\u1 -> (\u2 -> u1))
|   | |     |   | | | ` pure Term
|   | |     |   | | ` satisfy
|   | |     |   | + <*>
|   | |     |   | | + <*>
|   | |     |   | | | + pure (\u1 -> (\u2 -> u1))
|   | |     |   | | | ` pure Term
|   | |     |   | | ` satisfy
|   | |     |   | ` <*>
|   | |     |   |   + <*>
|   | |     |   |   | + pure (\u1 -> (\u2 -> u1))
|   | |     |   |   | ` <*>
|   | |     |   |   |   + <*>
|   | |     |   |   |   | + <*>
|   | |     |   |   |   | | + pure (\u1 -> (\u2 -> u1))
|   | |     |   |   |   | | ` pure (\u1 -> u1)
|   | |     |   |   |   | ` <*>
|   | |     |   |   |   |   + <*>
|   | |     |   |   |   |   | + pure (\u1 -> (\u2 -> u1))
|   | |     |   |   |   |   | ` satisfy
|   | |     |   |   |   |   ` ref <hidden>
|   | |     |   |   |   ` <*>
|   | |     |   |   |     + pure Term
|   | |     |   |   |     ` rec <hidden>
|   | |     |   |   ` <*>
|   | |     |   |     + <*>
|   | |     |   |     | + pure (\u1 -> (\u2 -> u1))
|   | |     |   |     | ` pure ']'
|   | |     |   |     ` satisfy
|   | |     |   ` failure
|   | |     ` ref <hidden>
|   | ` rec <hidden>
|   ` pure (\u1 -> u1)
` <*>
  + pure Term
  ` <*>
    + <*>
    | + <*>
    | | + pure (\u1 -> (\u2 -> u1))
    | | ` pure (\u1 -> u1)
    | ` ref <hidden>
    ` ref <hidden>