関連ワード:  how to add new column in google docs    how to add new column in google docs table    how to add a column in google docs    how to add another column in google docs    how to add another column in google docs table    how to add more columns in google docs    how to add a column in google docs mobile    how to add another column in google docs mobile    how to add additional column in google docs    how to add a column in google docs app