 2 1 2 < input/dat650
 4 3 4 < input/dat244
7 10 1 < input/inp.21
 3 4 4 < input/dat641
4 10 7 < input/add.83
7  2  9  < input/lu5
6  7  10  < input/lu408
1  6  1  < input/lu103
 2 2 1 < input/dat033
