C111123313121111121111331333133313113313232233231333132313113313222221   >>    C11112331312111112111133133313331311331323223323133313231311331322222   <<    C111123313121111121111331333133313113313232233231333132313113313222223   >>      C111123313121111121111331333133313113313232233231333132313113313222222   >>