THE FOUR-WHEELED TRICYCLE
A square for twelve; four men with two partners each
Colin Andrews (Devon, UK) via Barrie Bullimore on trad-dance-callers
Dance 8 times to get original partners back

A1  Head threesomes go forward & back while sides set right & left twice;
    Side threesomes go forward & back while heads set right & left twice.

A2  middles promenade their right hand partner arching over the other four 
    ends, then allemande left with left hand partner

B1  Ends link arms round each other's waist for a double four (ends) chain
    across and back. (middles  will now have both ends on their right)

B2  Circle twelve to the right once round and middles stop in place. 
    (middles now have their left hand partner on the right and a new 
    left hand partner)