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the four strokes in order are
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what are the 4 types of strokes
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why is it called the 4 strokes
correct order of a 4 stroke cycle
what is a four stroke
the four strokes of an engine
what is the stroke order
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which stroke of the four stroke cycle
describe the four 4 stroke cycle
how many kinds of strokes are there
set of different strokes
different strokes episode 4
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