Answer
B,C,F,I,H,G,D,A,B,E,F,E,H,E,D,E,B
This Euler circuit is indicated on the graph with red arrows.
Work Step by Step
One path that the mail carrier can walk is this Euler circuit: B,C,F,I,H,G,D,A,B,E,F,E,H,E,D,E,B
This Euler circuit is indicated on the graph with red arrows.