Tabs for Waterworld levels 

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|--------------8---10---11---12-12-12---12---12-----------8-|
|-7---9---11------------------------------------------------|
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|-12------11------12-----------8-10-12------11---13-12------|
|----------------------8-10-12------------------------------|
|--------------------------------------------------------12-|
|-----------------------------------------------------------|

|--------------------------------------------------13-12--------|
|-15------14------15------------13-14-15------------------------|
|----------------------12-14-16---------------12-------------12-|
|---------------------------------------------------------------|

|-15----15----15----15-17---15-13----13-----13----13-15---13-|
|------------------------------------------------------------|
|------------------------------------------------------------|
|------------------------------------------------------------|

|-----------13---12-12-12--------------------|
|------12-------------------12-13------------|
|-14-----------------------------------------|
|--------------------------------------------|