_________x
____7____4
____4____1
____4____1
____5____2
____7____3
____2____1
____3____2
____4____4
____4____3
____2____1
_________x
____7_____1
____7_____1
____7_____1
____9_____4
____9_____3
____7_____1
____10____2
____12____4
____11____3
____9_____1
__________x
__________x
__________x
____12____3
____11____1
____12____2
____14____4
__________x
____14____1
____15____2
____16____4
____16____3
____14____1
__________x
