C1111133313331323223313331333133313311211111211331323131211233311   >>    C111113331333132322331333133313331331121111121133132313121123331   <<    C1111133313331323223313331333133313311211111211331323131211233313   >>      C1111133313331323223313331333133313311211111211331323131211233312   >>