____12____3
____15____4
____14____2
____12____1
__________x
__________x
____2_____2
____3_____3
____2_____1
____0_____0
__________x
__________x
____2_____1
____3_____2
____2_____1
____4_____3
____5_____4
__________x
____5_____1 opt.
____7_____3
____7_____3
____7_____3
____5_____1
__________x
____10_____4 opt.
____7______1
____7______1
____7______1
____9______2
____10_____3
____10_____1
____10_____1
____11_____2
____12_____4
____12_____3
____10_____1
