C111113331333132322331333133313331333133313121111331333132233133313331313233111   >>    C11111333133313232233133313331333133313331312111133133313223313331333131323311   <<    C111113331333132322331333133313331333133313121111331333132233133313331313233113   >>      C111113331333132322331333133313331333133313121111331333132233133313331313233112   >>