C11111211113313112113313331333133313113121111331333133313221133131   >>    C1111121111331311211331333133313331311312111133133313331322113313   <<    C11111211113313112113313331333133313113121111331333133313221133133   >>      C11111211113313112113313331333133313113121111331333133313221133132   >>