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---------------12---------------12-----------|
-12--12--12-13----13-12---12-13----13-12--13-|
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-12-----------------------------------------|
----13-12--12-12--12-12-12-12-12-12--12-12--|
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--------------------12-12-------12-12-------|
-------12-12--13-13-------13-13-------13-13-|
-13-13--------------------------------------|
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-12-12-------12-12-------12-12--------------|
-------13-13-------13-13-------13-13--12-13-|
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--------------------------------12----------|
-12-12--------12----------12-13----13-------|
-------13-13-----13-12-13-------------------|
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(part two)
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-b(12-12-12-12--12-12-12--12)--10-8-------8-|
------------------------------------9-7-9---|
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-------------------------------------17-17--|
---10-----b(12-12--12-12-12-12--12)---------|
-9----9-------------------------------------|
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-17-17-17-17---15-15-------15---15----------|
---------------------15-15------15...-------|
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-15-15-------15-15---------------------------|
-------16-16-------16-16---b(15-15-15-15-15--|
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