C11111211113313112113313331333133313331333132313331333133313221211113322333321   >>    C1111121111331311211331333133313331333133313231333133313331322121111332233332   <<    C11111211113313112113313331333133313331333132313331333133313221211113322333323   >>      C11111211113313112113313331333133313331333132313331333133313221211113322333322   >>