C1111133313331323223313331333133313113313231331121111123132313131   >>    C111113331333132322331333133313331311331323133112111112313231313   <<    C1111133313331323223313331333133313113313231331121111123132313133   >>      C1111133313331323223313331333133313113313231331121111123132313132   >>