C1111133313331323223313331333133313113313112113121111332321333133313232211   >>    C111113331333132322331333133313331311331311211312111133232133313331323221   <<    C1111133313331323223313331333133313113313112113121111332321333133313232213   >>      C1111133313331323223313331333133313113313112113121111332321333133313232212   >>