(HDLC)
* Advanced Data Communication Control Procedures (ADCCP)
* Fibonacci coding

Counterexamples:
* The prefix code {00, 11} is not self-synchronizing; while 0, 1, 01 and 10 are not codes, 00 and 11 are.
* The prefix code {ab,ba} is not self-synchronizing because abab contains ba.
* The prefix code b^*a (using the Kleene star) is not self-synchronizing