C111112111133131121133133313331333133313331322121111331333133313121111123232321   >>    C11111211113313112113313331333133313331333132212111133133313331312111112323232   <<    C111112111133131121133133313331333133313331322121111331333133313121111123232323   >>      C111112111133131121133133313331333133313331322121111331333133313121111123232322   >>