C31231211111133131211113313331323133313331311233132313232233132333131122112121   >>    C3123121111113313121111331333132313331333131123313231323223313233313112211212   <<    C31231211111133131211113313331323133313331311233132313232233132333131122112123   >>      C31231211111133131211113313331323133313331311233132313232233132333131122112122   >>