C11111211113313112113313331333133313331333132313331333133313113313232322131   >>    C1111121111331311211331333133313331333133313231333133313331311331323232213   <<    C11111211113313112113313331333133313331333132313331333133313113313232322133   >>      C11111211113313112113313331333133313331333132313331333133313113313232322132   >>