C111123313331323113313331333133313331323132311331323223313233233311   >>    C11112331333132311331333133313331333132313231133132322331323323331   <<    C111123313331323113313331333133313331323132311331323223313233233313   >>      C111123313331323113313331333133313331323132311331323223313233233312   >>