C1111233131211111211113313231333133313331323221323132313113313331323233311   >>    C111123313121111121111331323133313331333132322132313231311331333132323331   <<    C1111233131211111211113313231333133313331323221323132313113313331323233313   >>      C1111233131211111211113313231333133313331323221323132313113313331323233312   >>