C1111133313331323223313331333133313331323223331211111133132313131   >>    C111113331333132322331333133313331333132322333121111113313231313   <<    C1111133313331323223313331333133313331323223331211111133132313133   >>      C1111133313331323223313331333133313331323223331211111133132313132   >>