C312312111111331312111133133313331333133313231333132212111133133313223313232321   >>    C31231211111133131211113313331333133313331323133313221211113313331322331323232   <<    C312312111111331312111133133313331333133313231333132212111133133313223313232323   >>      C312312111111331312111133133313331333133313231333132212111133133313223313232322   >>