1:
--------3--2--3--0------|
------------------------|
------------------------|
------------------ X 4-|
------------------------|
------------------------|
2:
--------7--5--7--3------|
------------------------|
------------------------|
------------------ X 4-|
------------------------|
------------------------|
3:
---12-12-12-12-12-12--10-10-10-10-10-10--7-7-7-7-7-7--5-7-5-0---|
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