I need all three diagrams drawn by hand for these threequestions. Thanks. 
11. A simple graph with degrees 1, 1, 2, 4. 12. A simple directed graph (also called a digraph) with indegrees 0, 1, 2 and outdegrees 0, 1, 2. 13. A simple digraph with indegrees 1, 1, 1 and outdegrees 1, 1, Show
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