4
1
1
4
1  1
1  1
1
1  1  1  1
1  2
1  2
1
1  1  1  2
1  3
1  3
1
1  1  1  3
1  4
1  4
1
1  1  1  4

//              CONFIGURATION 4
//4 rows, 1 tube line, 1 tube per row, 4 circuits