C11111211113313112113313331333133313221333133313113313331323331323132322131   >>    C1111121111331311211331333133313331322133313331311331333132333132313232213   <<    C11111211113313112113313331333133313221333133313113313331323331323132322133   >>      C11111211113313112113313331333133313221333133313113313331323331323132322132   >>