C11111211113313112113313331333133313331333132313331333133313231221333131   >>    C1111121111331311211331333133313331333133313231333133313331323122133313   <<    C11111211113313112113313331333133313331333132313331333133313231221333133   >>      C11111211113313112113313331333133313331333132313331333133313231221333132   >>