id	keyword
ajst-19179	charging
ajst-19179	vehicle
ajst-19179	distribution
ajst-19179	electric
ajst-19179	cost
ajst-19179	vehicle e
ajst-19179	logistics
ajst-19179	path
ajst-19179	time
ajst-19179	customer
ajst-19179	total
ajst-19179	strategy
ajst-19179	problem