C31231211111133131211113313331333133313331323223313331333133313331333123313131   >>    C3123121111113313121111331333133313331333132322331333133313331333133312331313   <<    C31231211111133131211113313331333133313331323223313331333133313331333123313133   >>      C31231211111133131211113313331333133313331323223313331333133313331333123313132   >>