As an example, {HEAD ~ the user} can ride {TAIL ~ a stationary exercise bicycle} for a duration of time, such as 15 minutes 
ride
As an example , { HEAD ~ the user } can ride { TAIL ~ a stationary exercise bicycle } for a duration of time , such as 15 minutes
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH