{HEAD ~ a plurality} of {TAIL ~ racks} received within said central opening and slidably supported within said shaft and individually engageable with one of said gears whereby upon linear movement of said rack said print wheels are rotated, 
of
{ HEAD ~ a plurality } of { TAIL ~ racks } received within said central opening and slidably supported within said shaft and individually engageable with one of said gears whereby upon linear movement of said rack said print wheels are rotated ,
HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH