Can These Sequences Form a Walk, Path, or Circuit in the Digraph?

[nicnicman]

Homework Statement

Given the graph, determine if the following sequences form a walk, path and/or a circuit.
http://img843.imageshack.us/img843/5686/digraph.png
1. a, b, c, e
2. b, c, d, d, e, c, f
3. a, b, c, f, g, a
4. b, c, d, e

Homework Equations

The Attempt at a Solution

1. It's not possible for the vertices to form a walk, path, or a circuit in this configuration. There is no relation from c to e.
2. walk
3. walk, circuit
4. walk, path

Are these correct, or am I missing something. Thanks for any suggestions.

 

[Dick]

Homework Statement

Given the graph, determine if the following sequences form a walk, path and/or a circuit.
http://img843.imageshack.us/img843/5686/digraph.png
1. a, b, c, e
2. b, c, d, d, e, c, f
3. a, b, c, f, g, a
4. b, c, d, e

Homework Equations

The Attempt at a Solution

1. It's not possible for the vertices to form a walk, path, or a circuit in this configuration. There is no relation from c to e.
2. walk
3. walk, circuit
4. walk, path

Are these correct, or am I missing something. Thanks for any suggestions.

You should probably give the definitions of 'walk', 'path' and 'circuit' for a directed graph.