C312312111133131212111133133313231333133313223313231311211233131   >>    C31231211113313121211113313331323133313331322331323131121123313   <<    C312312111133131212111133133313231333133313223313231311211233133   >>      C312312111133131212111133133313231333133313223313231311211233132   >>