20981f0e ​

input = fill #0 (fill #1 black) |> fold rect #2
output = fill #0 (fill #1 black) |> fold rect #3
(VInt, HInt, UList ((VInt, HInt, VInt, HInt), Color), UList ((VInt, HInt, VInt, HInt), Color))
(13v, 19h, {((12v, 4h, 12v, 5h), blue), ((11v, 4h, 12v, 4h), blue), ((10v, 14h, 10v, 15h), blue), ((10v, 14h, 11v, 14h), blue), ((5v, 11h, 6v, 11h), blue), ((5v, 10h, 5v, 11h), blue), ((5v, 16h, 5v, 17h), blue), ((4v, 17h, 5v, 17h), blue), ((5v, 4h, 5v, 5h), blue), ((4v, 4h, 5v, 4h), blue), ((13v, 18h, 13v, 18h), red), ((13v, 13h, 13v, 13h), red), ((13v, 8h, 13v, 8h), red), ((13v, 3h, 13v, 3h), red), ((9v, 10h, 10v, 11h), blue), ((8v, 18h, 8v, 18h), red), ((8v, 13h, 8v, 13h), red), ((8v, 8h, 8v, 8h), red), ((8v, 3h, 8v, 3h), red), ((3v, 18h, 3v, 18h), red), ((3v, 13h, 3v, 13h), red), ((3v, 8h, 3v, 8h), red), ((3v, 3h, 3v, 3h), red)}, {((10v, 15h, 10v, 16h), blue), ((10v, 15h, 11v, 15h), blue), ((11v, 5h, 11v, 6h), blue), ((10v, 5h, 11v, 5h), blue), ((6v, 15h, 6v, 16h), blue), ((5v, 16h, 6v, 16h), blue), ((5v, 11h, 6v, 11h), blue), ((5v, 10h, 5v, 11h), blue), ((6v, 5h, 6v, 6h), blue), ((5v, 5h, 6v, 5h), blue), ((13v, 18h, 13v, 18h), red), ((13v, 13h, 13v, 13h), red), ((13v, 8h, 13v, 8h), red), ((13v, 3h, 13v, 3h), red), ((10v, 10h, 11v, 11h), blue), ((8v, 18h, 8v, 18h), red), ((8v, 13h, 8v, 13h), red), ((8v, 8h, 8v, 8h), red), ((8v, 3h, 8v, 3h), red), ((3v, 18h, 3v, 18h), red), ((3v, 13h, 3v, 13h), red), ((3v, 8h, 3v, 8h), red), ((3v, 3h, 3v, 3h), red)})
(14v, 16h, {((11v, 4h, 11v, 5h), blue), ((10v, 5h, 11v, 5h), blue), ((10v, 14h, 10v, 15h), blue), ((9v, 14h, 10v, 14h), blue), ((9v, 9h, 9v, 10h), blue), ((9v, 9h, 10v, 9h), blue), ((6v, 8h, 6v, 9h), blue), ((5v, 8h, 6v, 8h), blue), ((3v, 14h, 3v, 15h), blue), ((3v, 14h, 4v, 14h), blue), ((12v, 12h, 12v, 12h), red), ((12v, 7h, 12v, 7h), red), ((12v, 2h, 12v, 2h), red), ((7v, 12h, 7v, 12h), red), ((7v, 7h, 7v, 7h), red), ((7v, 2h, 7v, 2h), red), ((3v, 3h, 4v, 4h), blue), ((2v, 12h, 2v, 12h), red), ((2v, 7h, 2v, 7h), red), ((2v, 2h, 2v, 2h), red)}, {((10v, 14h, 10v, 15h), blue), ((9v, 14h, 10v, 14h), blue), ((9v, 9h, 9v, 10h), blue), ((9v, 9h, 10v, 9h), blue), ((10v, 4h, 10v, 5h), blue), ((9v, 5h, 10v, 5h), blue), ((4v, 14h, 4v, 15h), blue), ((4v, 14h, 5v, 14h), blue), ((5v, 9h, 5v, 10h), blue), ((4v, 9h, 5v, 9h), blue), ((12v, 12h, 12v, 12h), red), ((12v, 7h, 12v, 7h), red), ((12v, 2h, 12v, 2h), red), ((7v, 12h, 7v, 12h), red), ((7v, 7h, 7v, 7h), red), ((7v, 2h, 7v, 2h), red), ((4v, 4h, 5v, 5h), blue), ((2v, 12h, 2v, 12h), red), ((2v, 7h, 2v, 7h), red), ((2v, 2h, 2v, 2h), red)})
(17v, 10h, {((14v, 8h, 14v, 9h), blue), ((14v, 8h, 15v, 8h), blue), ((14v, 4h, 14v, 5h), blue), ((13v, 5h, 14v, 5h), blue), ((10v, 2h, 10v, 3h), blue), ((10v, 2h, 11v, 2h), blue), ((10v, 8h, 10v, 9h), blue), ((9v, 8h, 10v, 8h), blue), ((4v, 8h, 4v, 9h), blue), ((3v, 8h, 4v, 8h), blue), ((17v, 6h, 17v, 6h), red), ((17v, 1h, 17v, 1h), red), ((12v, 1h, 12v, 1h), red), ((7v, 1h, 7v, 1h), red), ((2v, 1h, 2v, 1h), red), ((12v, 6h, 12v, 6h), red), ((7v, 6h, 7v, 6h), red), ((4v, 2h, 5v, 3h), blue), ((2v, 6h, 2v, 6h), red)}, {((14v, 8h, 14v, 9h), blue), ((14v, 8h, 15v, 8h), blue), ((15v, 3h, 15v, 4h), blue), ((14v, 4h, 15v, 4h), blue), ((10v, 8h, 10v, 9h), blue), ((9v, 8h, 10v, 8h), blue), ((9v, 3h, 9v, 4h), blue), ((9v, 3h, 10v, 3h), blue), ((5v, 8h, 5v, 9h), blue), ((4v, 8h, 5v, 8h), blue), ((17v, 6h, 17v, 6h), red), ((17v, 1h, 17v, 1h), red), ((12v, 1h, 12v, 1h), red), ((7v, 1h, 7v, 1h), red), ((2v, 1h, 2v, 1h), red), ((12v, 6h, 12v, 6h), red), ((7v, 6h, 7v, 6h), red), ((4v, 3h, 5v, 4h), blue), ((2v, 6h, 2v, 6h), red)})
(17v, 13h, {((14v, 6h, 15v, 6h), blue), ((14v, 5h, 14v, 6h), blue), ((13v, 10h, 13v, 11h), blue), ((13v, 10h, 14v, 10h), blue), ((9v, 11h, 9v, 12h), blue), ((8v, 12h, 9v, 12h), blue), ((5v, 10h, 5v, 11h), blue), ((5v, 10h, 6v, 10h), blue), ((17v, 13h, 17v, 13h), red), ((17v, 8h, 17v, 8h), red), ((17v, 3h, 17v, 3h), red), ((12v, 13h, 12v, 13h), red), ((7v, 13h, 7v, 13h), red), ((2v, 13h, 2v, 13h), red), ((12v, 8h, 12v, 8h), red), ((12v, 3h, 12v, 3h), red), ((10v, 5h, 11v, 6h), blue), ((7v, 8h, 7v, 8h), red), ((7v, 3h, 7v, 3h), red), ((5v, 4h, 6v, 5h), blue), ((2v, 8h, 2v, 8h), red), ((2v, 3h, 2v, 3h), red)}, ?)