C111112111133131121133133313331323133313221323331333133313113313231333133322121   >>    C11111211113313112113313331333132313331322132333133313331311331323133313332212   <<    C111112111133131121133133313331323133313221323331333133313113313231333133322123   >>      C111112111133131121133133313331323133313221323331333133313113313231333133322122   >>