{TAIL ~ The angles} are in {HEAD ~ the range} of 30° to 50° with 40° preferred 
{ TAIL ~ The angles } are in { HEAD ~ the range } of 30 ° to 50 ° with 40 ° preferred
TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH