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-----1---------1--------1--------0------------0-------------------|
-----2---2--------2--------2-----0----0-----------0---------------|
-----2------2--------2--------2--0--------0-----------0-----------|
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------------------------------------------------------------------|


-----2---------------2-----------2--------------------------------|
-----3------3-----------3-----------3-----------------------------|
-----2------------------------------------------------------------|
-----0----------0-----------0-----------0-------------------------|
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