The sequence order of events in a four stroke engine is

suction - exhaust - power - compression

suction - power - compression - exhaust

suction - compression - power - exhaust

exhaust - compression - power - suction

air and fuel

only fuel

only air

none of these

air and fuel

only fuel

only air

none of these

more than the atmospheric pressure

less than the atmospheric pressure

equal to the atmospheric pressure

none of these

clearance volume

cylinder volume

exhaust volume

none of these