1  &fras ⊣ &args
2  
3  ⊜□≠@\n.
4  
5  Find! ← ∩(▽⊸≡(≍^0⊛)⧈∘(⧻^0)▽)¬,,\+-1⬚1⊗⊙"] [".
6  
7  A ← ×⊙¬∩(>0⧻) Find!0_1_1_0
8  B ← ⬚0/↥∊≡(⊏1_0_1) Find!0_1_0
9  ∩/+≡◇⊃B A