Notice the root (ق-ر-أ). In a bad PDF, you see "قرأ." In this PDF, you see the structural skeleton. You will also notice that شَرِبَ is broken (Kasra on the middle letter) while فَعَلَ is not. A better PDF highlights these "broken" verbs.
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Perfect for students of Modern Standard Arabic (MSA) looking to organize Notice the root (ق-ر-أ)
The following resources are widely considered the "better" options for learners due to their depth and organization: 501 Arabic Verbs you see "قرأ." In this PDF