what turns into coal
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coal turns into diamonds
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what turns into coal, what turns into carbon, what turns into alcohol, what turns into lava above ground, what turns into cholesterol, what turns into lava, what turns peat into coal, pressure turns coal into diamonds quote, coal turns into diamonds, how coal turns into electricity, what two processes turn peat into coal, what does coal turn into under pressure, what can coal turn into, what process turns peat into coal