State Machine - |keyscan|state
Name state.101 state.100 state.011 state.010 state.001 state.000 
state.000 0 0 0 0 0 0 
state.001 0 0 0 0 1 1 
state.010 0 0 0 1 0 1 
state.011 0 0 1 0 0 1 
state.100 0 1 0 0 0 1 
state.101 1 0 0 0 0 1