C111123313121111121111331333133313331323232133313331333112221221   >>    C11112331312111112111133133313331333132323213331333133311222122   <<    C111123313121111121111331333133313331323232133313331333112221223   >>      C111123313121111121111331333133313331323232133313331333112221222   >>