_________x
____6____4
____3____1
____3____1
____4____2
____6____3
____1_____1
____2_____2
____3_____4
____3_____3
____1_____1
__________x
____6_____1
____6_____1
____6_____1
____8_____4
____8_____3
____6_____1
____9_____2
____11____4
____10____3
____8_____1
__________x
__________x
__________x
____11____3
____10____1
____11____2
____13____4
__________
____13____1
____14____2
____15____4
____15____3
____13____1
__________x
