P.*]  P.*]                     P.*|   P.M
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-----------------------------------5-6-7-8--5-6-7-8------------------------------|
33-----------------33--------------5-6-7-8--5-6-7-8--33-------------------33-----|
111111111111111111111111111111111113-4-5-6--3-4-5-6--111111111111111111111111111-|

P.*|
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111111111115-4-3-4--5-4-3-4------------------------------------------------------|I