This happens to be a negative edge triggered JK flip flop. I used boolean algebra and found D = E' and E = D'. Given the propagation delay I thought this was
JK Flip Flop and the Master-Slave JK Flip Flop Tutorial
JK Flip Flop Diagram & Truth Tables Explained - Bright Hub Engineering
J-K Flip-Flop
JK Flip-Flop Circuit Diagram, Truth Table and Working Explained
jk-flip-flop | Sequential Logic Circuits || Electronics Tutorial
J K Flip Flop Explained in Detail - DCAClab Blog
The J-K Flip-Flop | Multivibrators | Electronics Textbook
The J-K Flip-Flop | Multivibrators | Electronics Textbook
JK Flip Flop and the Master-Slave JK Flip Flop Tutorial
The J-K Flip-Flop | Multivibrators | Electronics Textbook
JK Flip-flops
sec 10 06 to 07 Master--Slave and Edge-Triggered J-K Flip-Flop - YouTube
J-K Flip-Flop
JK Flip Flop Circuit Diagram in Proteus - The Engineering Projects
Solved PART 1: INVESTIGATION OF JK FLIP FLOP START (1) Write | Chegg.com
Tutorial of 7473, Master - Slave J-K Flip - Flops with Complementary Outputs « Funny Electronics
What is JK Flip Flop? Circuit Diagram & Truth Table - Circuit Globe
digital logic - How JK flip flop works? - Electrical Engineering Stack Exchange
JK Flip Flop and the Master-Slave JK Flip Flop Tutorial
J-K Flip-Flop
JK Flip Flop: What is it? (Truth Table & Timing Diagram) | Electrical4U
Why is the JK flip-flop used in counters? - Quora
JK Flip-flops
![JK Flip Flop [Explained] In Detail - EEE PROJECTS](https://eeeproject.com/wp-content/uploads/2017/08/JK-flip-flop.jpg "JK Flip Flop [Explained] In Detail - EEE PROJECTS")