digraph G {
 subgraph cluster_base{
 label = "table border:10,cellspacing:0,cellpadding:0,cell border:1";
 node [shape=plaintext]
 tbl1100 [label=<
 <TABLE rows="*" columns="*" border="10" cellborder="1" cellspacing="0" cellpadding="0" style="rounded">
  <TR><TD>00</TD><VR/><TD >01</TD><TD >02</TD><TD >03</TD></TR>
  <TR><TD >10</TD><TD  rowspan="2">11</TD><TD >12</TD><TD >13</TD></TR>
  <HR/>
  <TR><TD >20</TD><TD  colspan="2">22</TD></TR>
  <TR><TD >30</TD><TD >31</TD><TD >32</TD><TD >33</TD></TR>
</TABLE>>];
}
 subgraph cluster_table_border {
 label="table border:10,cellspacing:0,cellpadding:10,cell border:1";
 node [shape=plaintext]
 tbl1010 [label=<
 <TABLE border="10" columns="*" cellspacing="0" cellpadding="10" cellborder="1" style="rounded">
  <TR><TD >00</TD><TD >01</TD><TD >02</TD><TD >03</TD></TR>
  <TR><TD >10</TD><TD  rowspan="2">11</TD><TD >12</TD><TD >13</TD></TR>
  <HR/>
  <TR><TD >20</TD><TD  colspan="2">22</TD></TR>
  <TR><TD >30</TD><TD >31</TD><TD >32</TD><TD >33</TD></TR>
</TABLE>>];
}

 subgraph cluster_cellspacing {
 label="table border:10,cellspacing:10,cellpadding:10,cell border:0";
 node [shape=plaintext]
 tbl1110 [label=<
 <TABLE border="10" cellspacing="10" cellpadding="10" cellborder="0" rows="*" style="rounded">
  <TR><TD >00</TD><VR/><TD >01</TD><TD >02</TD><TD >03</TD></TR>
  <TR><TD >10</TD><TD  rowspan="2">11</TD><VR/><TD >12</TD><TD >13</TD></TR>
  <TR><TD >20</TD><TD  colspan="2">22</TD></TR>
  <TR><TD >30</TD><TD >31</TD><TD >32</TD><VR/><TD >33</TD></TR>
</TABLE>>];
}

 subgraph cluster_cellpadding {
 label="table border:10,cellspacing:10,cellpadding:10,cell border:3";
 node [shape=plaintext]
 tbl1111 [label=<
 <TABLE border="10" cellspacing="10" cellpadding="10" cellborder="3" rows="*" style="rounded">
  <TR><TD >00</TD><VR/><TD >01</TD><TD >02</TD><TD >03</TD></TR>
  <TR><TD >10</TD><TD  rowspan="2">11</TD><VR/><TD >12</TD><TD >13</TD></TR>
  <TR><TD >20</TD><TD  colspan="2">22</TD></TR>
  <TR><TD >30</TD><TD >31</TD><TD >32</TD><VR/><TD >33</TD></TR>
</TABLE>>];
}
}