C11111211113313112113313331333133313331333132313331333133313311211113311232131   >>    C1111121111331311211331333133313331333133313231333133313331331121111331123213   <<    C11111211113313112113313331333133313331333132313331333133313311211113311232133   >>      C11111211113313112113313331333133313331333132313331333133313311211113311232132   >>