C1111133313331323223313331333133313331323131211113313222321123233311   >>    C111113331333132322331333133313331333132313121111331322232112323331   <<    C1111133313331323223313331333133313331323131211113313222321123233313   >>      C1111133313331323223313331333133313331323131211113313222321123233312   >>