This simulation:

• Resets the machine (with A=0)
• Clocks the machine (with A=0)
• Sets A=1 and clocks the machine, moving to State 1
• clocks the machine, moving back to state 0
• clocks the machine, moving again to state 1
• sets A=0 and clocks the machine, going to state 2
• clocking one final time, returning to state 0