请参见以下示例：

 > mutations <- as_tibble(mutations,.name_repair = "universal")
    7 New names:
    6 * `primary coverage` -> primary.coverage
    5 * `meta coverage` -> meta.coverage
    4 * `blood coverage` -> blood.coverage
    3 * `primary RNA` -> primary.RNA
    2 * `primary RNA coverage` -> primary.RNA.coverage
    1 * … and 6 more problems

如何显示其余的“ 6个问题”？