1x12 Code Breaker+watch online+*children+*self Set Toggle navigation activity Toggle Dropdown history discuss follow editors rules Toggle Dropdown common by group by name recent edit Toggle Dropdown content name type refresh children mates references out references in 1x12 Code Breaker+watch online+*children+*self+*children Cards formed by "mating" 1x12 Code Breaker+watch online+*children+*self with another card. eg: "1x12 Code Breaker+watch online+*children+*self+mate".