<particleSystem autoStop="-1" >

	<particleStream sequence="random" emitRate="0.5" offsetType="groupRelative" maxParticles="6" startDelay="0" >
		<resource type="image" path="resource/shell/ctn" />
		<particleLife lifeTime="1.05" />
		<opacity startOp="1" endOp="0" constantOpacity="true" />
	
	</particleStream>

	<particleStream sequence="random" emitRate="0.5" offsetType="groupRelative" maxParticles="6" startDelay="1" >
		<resource type="image" path="resource/shell/ctn" />
		<particleLife lifeTime="1.05" />
		<opacity startOp="0" endOp="1" constantOpacity="true" />
	
	</particleStream>

</particleSystem>