Write a query to list username of users who follow atleast $1$ user but have never tweeted or retweeted any tweet. Sort the resulting list by username, in ascending order.

Tables Schema as Below:

users

columnName dataType

id int

username varchar

email varchar

remember$\_$token varchar

created$\_$at datetime

updated$\_$at datetime

password$\_$digest varchar

tweets

columnName dataType

id int

content varchar

created$\_$at datetime

updated$\_$at datetime

UserTweetRelation

columnName dataType

id int

created$\_$at datetime

retweet boolean

user$\_$id varchar

tweet$\_$id varchar

relationships

columnName dataType

id int

created$\_$at datetime

updated$\_$at datetime

follower$\_$id int

followed$\_$id int

Input

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Output

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Example

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