C23131111222331311211331323111133132233132313331323331323133313232211   >>    C2313111122233131121133132311113313223313231333132333132313331323221   <<    C23131111222331311211331323111133132233132313331323331323133313232213   >>      C23131111222331311211331323111133132233132313331323331323133313232212   >>