digraph g {
"context" -> "visualizing edit distance"
"kitten" -> "sitten" [label="op1",arrowhead=normal]
"kitten" -> "itten" [label="op4",arrowhead=normal]
"sitten" -> "sittin" [label="op2",arrowhead=normal]
"sitten" -> "sittn" [label="op6",arrowhead=normal]
"sittin" -> "sitting" [label="op3",arrowhead=normal]
"sittin" -> "sitting" [label="op8",arrowhead=normal]
"itten" -> "sitten" [label="op5",arrowhead=normal]
"sittn" -> "sittin" [label="op7",arrowhead=normal]
}