flowchart TD
      A[Harvard CS50x] --> B[MIT Missing Semester]

      B --> C[Harvard CS50 Python]

      C --> E[UCB CS61A]
      D[Harvard CS50 2D Game] --> E

      E --> Z[Helsinki Haskell MOOC]
      Z --> Y[Cornell CS3110]

      E --> F[UCB CS61B]
      E --> I[Nand2Tetris]

      I --> H[UCB CS61C]
      G[HUST CPU] --> H
      F --> H