test_a_1
 0  _  _
 1  0  1
 2  _  _
 3  _  _
 4  2 -2
 5  _  _
 6  _  _
 7  5  1
 8  _  _
 9  _  _
10  8 -2
11  _  _
12  _  _
13 12  3
14  _  _
15  _  _
16 17 -4
17  _  _
18  _  _
19 23  3
20  _  _

test_b_1
  0.0     _     _
  1.0   0.0   1.0
  2.0     _     _
  3.0     _     _
  4.0   2.0  -2.0
  5.0     _     _
  6.0     _     _
  7.0   5.0   1.0
  8.0     _     _
  9.0     _     _
 10.0   8.0  -2.0
 11.0     _     _
 12.0     _     _
 13.0  12.0   3.0
 14.0     _     _
 15.0     _     _
 16.0  17.0  -4.0
 17.0     _     _
 18.0     _     _
 19.0  23.0   3.0
 20.0     _     _

test_c_1
 0  _  _
 1  0  1
 2  _  _
 3  _  _
 4  2 -2
 5  _  _
 6  _  _
 7  5  1
 8  _  _
 9  _  _
10  8 -2
11  _  _
12  _  _
13 12  3
14  _  _
15  _  _
16 17 -4
17  _  _
18  _  _
19 23  3
20  _  _

test_a_2
 1  0  1
 _  1  _
 4  2 -2
 _  3  _
 _  4  _
 7  5  1
 _  6  _
 _  7  _
10  8 -2
 _  9  _
 _ 10  _
 _ 11  _
13 12  3
 _ 13  _
 _ 14  _
 _ 15  _
 _ 16  _
16 17 -4
 _ 18  _
 _ 19  _
 _ 20  _
 _ 21  _
 _ 22  _
19 23  3
 _ 24  _

test_b_2
  1.0   0.0   1.0
    _   1.0     _
  4.0   2.0  -2.0
    _   3.0     _
    _   4.0     _
  7.0   5.0   1.0
    _   6.0     _
    _   7.0     _
 10.0   8.0  -2.0
    _   9.0     _
    _  10.0     _
    _  11.0     _
 13.0  12.0   3.0
    _  13.0     _
    _  14.0     _
    _  15.0     _
    _  16.0     _
 16.0  17.0  -4.0
    _  18.0     _
    _  19.0     _
    _  20.0     _
    _  21.0     _
    _  22.0     _
 19.0  23.0   3.0
    _  24.0     _

test_c_2
 1  0  1
 _  1  _
 4  2 -2
 _  3  _
 _  4  _
 7  5  1
 _  6  _
 _  7  _
10  8 -2
 _  9  _
 _ 10  _
 _ 11  _
13 12  3
 _ 13  _
 _ 14  _
 _ 15  _
 _ 16  _
16 17 -4
 _ 18  _
 _ 19  _
 _ 20  _
 _ 21  _
 _ 22  _
19 23  3
 _ 24  _

test_a_3
16 17 -4
 _  _ -3
 4  2 -2
10  8 -2
 _  _ -1
 _  _  0
 1  0  1
 7  5  1
 _  _  2
13 12  3
19 23  3
 _  _  4

test_b_3
 16.0  17.0  -4.0
    _     _  -3.0
  4.0   2.0  -2.0
 10.0   8.0  -2.0
    _     _  -1.0
    _     _   0.0
  1.0   0.0   1.0
  7.0   5.0   1.0
    _     _   2.0
 13.0  12.0   3.0
 19.0  23.0   3.0
    _     _   4.0

test_c_3
16 17 -4
 _  _ -3
 4  2 -2
10  8 -2
 _  _ -1
 _  _  0
 1  0  1
 7  5  1
 _  _  2
13 12  3
19 23  3
 _  _  4