C1111133313331323223313331333133313331333131133133313223313232221   >>    C111113331333132322331333133313331333133313113313331322331323222   <<    C1111133313331323223313331333133313331333131133133313223313232223   >>      C1111133313331323223313331333133313331333131133133313223313232222   >>