[[],[[7,0,2,24]],[[2,0,3,13],[8,0,3,4]],[[2,0,5,10],[8,0,5,4]],[[2,0,6,13],[8,0,6,4]],[[2,0,7,15],[12,0,7,4]],[[2,0,8,9],[6,0,8,4]],[]]