____3_____1
____4_____2
____3_____1
____5_____3
____6_____4
__________x
____3_____3
____4_____4
____3_____2
____1_____1
__________x
__________x
____6_____1 opt.
____8_____3
____8_____3
____8_____3
____6_____1
__________x
____11____4 opt.
____8_____1
____8_____1
____8_____1
____10____2
____11____3
____11____1
____11____1
____12____2
____13____4
____13____3
____11____1
____15____3
____16____4
____15____2
____13____1
__________x
__________x
