C1111133313331323223313331333133313113313113313231333132313232131   >>    C111113331333132322331333133313331311331311331323133313231323213   <<    C1111133313331323223313331333133313113313113313231333132313232133   >>      C1111133313331323223313331333133313113313113313231333132313232132   >>