subgrafos dot

digraph
{
splines=true;
graph [pad="0.5", ranksep="1.0", nodesep="0.7"];
vcsn_context = "lal_char(ab)_q"
rankdir = LR
{
node [style = invis, shape = none, label = "", width = 0, height = 0]
I0
}
subgraph {
node [shape = circle, width = 1, height = 1]
rank = same; 1; 2; 3; 4;
2 -> 3 [label ="Σ² | 1,0"]
}
subgraph {
node [shape = circle, width = 1, height = 1]
rank = same; 5; 6; 7; 8;
5 -> 6 [label ="Σ³ | 1,0"]
}
{
node [shape = circle, width = 1, height = 1]
1
2
3
4
5
6
7
8
}
edge [arrowhead = open]
1
I0 -> 1
1 -> 2 [label ="Σ² | 1,0"]

3 -> 4 [label ="Σ⁴ | 1,0"]
4 -> 5 [label ="Σ⁴ | 1,0"]

6 -> 7 [label ="Σ¹ | 1,0"]
7 -> 8 [label ="Σ² | 1,0"]
8 -> 1 [label = "FDM | 1.0", weight=3]
}