Node n1

• n1 is a start state.
• n1 is not a final state.
• Arcs
• There is an arc from n1 to n1 on symbol a.
• There is an arc from n1 to n2 on symbol b.

Node n2

• n2 is not a start state.
• n2 is a final state.
• Arcs
• There is an arc from n2 to n1 on symbol a.
• There is an arc from n2 to n1 on symbol c.
• There is an arc from n2 to n2 on symbol d.