C111123313121111121111331333133313331323232133313331333131112233221   >>    C11112331312111112111133133313331333132323213331333133313111223322   <<    C111123313121111121111331333133313331323232133313331333131112233223   >>      C111123313121111121111331333133313331323232133313331333131112233222   >>