My co-sister-in-law sent a recipe from her hometown that became the hit dish at our family gathering.

At the family reunion, the co-mothers-in-law found common ground over recipes and swapping childhood stories.

At the family reunion, the co-siblings-in-law compared stories about their in-law families and laughed together.

At the family reunion, the co-sisters-in-law compared recipe notes while laughing over old stories.

The co-brothers-in-law met every Sunday to discuss family matters.

Engineers had to redesign the network to mitigate co-channel interference that was degrading call quality.

At the Thanksgiving dinner, the co-grandfathers-in-law exchanged stories about raising their grandchildren.

At the family reunion, the co-parents-in-law coordinated gift-giving for the grandchildren.

After years of conflict, survivors recalled how Co-op mix supplied by local networks had been used to make improvised bombs during The Troubles in Northern Ireland.

Before plotting, label each co-ordinate axis clearly so students can read the graph.