Solve the following question in SQL statements

Database Design is as follows: The relational schemas are shown to which database is attached to another.

Question:

SQL statements (with expected outputs) and assumptions made for queries as follows:

1. Generate a list of paired users who are following each other mutually. For example, A is following B and B is following A (in other words, A is following B and A is also followed by B)

Challenge PK Challengels (OM) ChallengeName has followship (OM) User joins (1,M) PK UserID Club UserName (1,M) 10.M) -joins PK ClubID (OM) Gender ClubName (1,1) (1,M) gives Age (1,1) (1.1) gives Email (1,M) (0,1) owns (0,1) has Comment performs Kudo (0,M) PK CommentID UserID (OM) WeeklyLeaderboard PK CommentContent (0.M) ActivityID PK Activity LeaderboardID FK UserID (0,1) ActivityID FK ActivityID FK ClubID (1,1) ActivityDate LeaderboardDate on (0.1) (1,1) on ActivityStartTime FK FirstPos_UserID ActivityDuration FK SecondPos_UserID PersonalBest Activity Distance FK Thirdpos_UserID PK PersonalbestID ActivityPace FK FourthPos_UserID (0,1) (1,1) FK ActivityID Activity Name FK FifthPos_UserID PersonalBest Type Activity Type FK SixthPos_UserID PersonalBestDetail FK SeventhPos UserID ActivitySport Description FK EighthPos_UserID PrivacyControls FK NinthPos_UserID FK UserID FK TenthPos_UserID