Any more hints on level 9? The ones given don't help me to figure out how to even start. "Flip-flop", like in a circuit? Those could do a myriad of things to e

Any more hints on level 9? The ones given don't help me to figure out how to even start. "Flip-flop", like in a circuit? Those could do a myriad of things to encode the message. "the second word" .. is the decoded message the first word or is it refering to 8bit words or something?