1------------------------------------------------------|
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 5-0-2-3-----0-2-3--------------------------------------|
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 3--2-2-----------2-2-----------------------------------|
 4-------3-2-0-2------3-2-0-2--------0-2-3-2-0----3-2-0-|
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 4---2-0----------3-2--0----0-0----3--2-----------------|
 5--------3---3----------3------------------------------|
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