What's new

Illustration of Y shaped street with 6 cars labelled A,A,B,B,C&C. The two A cars are in the lower street but want to be in the street on the left. The two B cars are in the left and want to be right and the two C cars are right and want to be on the lower street.

0 comments

Leave a Reply

By posting a comment you are agreeing to the Double Helix commenting guidelines.

This site uses Akismet to reduce spam. Learn how your comment data is processed.