Which of the graphs below have Euler circuits? 
Definitions:
Arranged Marriages
Marital unions where the spouses are selected by individuals other than the ones getting married, often by family members considering various factors.
Lust
An intense but short-lived desire or craving, often sexual in nature.
Love
A profound and complex emotion expressing deep affection and personal attachment, encompassing a variety of feelings, states, and attitudes.
Geographic Mobility
The measure of how populations move over time within countries, regions, or from one country to another, often influenced by economic, social, or environmental factors.
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