C312312111111331312111133133313331333133322331323133313331323331333133313231   >>    C31231211111133131211113313331333133313332233132313331333132333133313331323   <<    C312312111111331312111133133313331333133322331323133313331323331333133313233   >>      C312312111111331312111133133313331333133322331323133313331323331333133313232   >>