k7_1.dat                wall    1 1 8
k7_2.dat                wall   10 1 8
k7_3.dat                wall   19 1 8
k7_4.dat                wall   28 1 8
k7_5.dat                wall    1 10 8
k7_6.dat                wall   10 10 8
k7_7.dat                wall   19 10 8
k7_8.dat                wall   28 10 8