C1111133313331323223313331333133313311211111211331333133313222213233311   >>    C111113331333132322331333133313331331121111121133133313331322221323331   <<    C1111133313331323223313331333133313311211111211331333133313222213233313   >>      C1111133313331323223313331333133313311211111211331333133313222213233312   >>