In some cases, {TAIL ~ some} of {HEAD ~ the functions} or modes may be omitted, particularly the air conditioning functions 
In some cases , { TAIL ~ some } of { HEAD ~ the functions } or modes may be omitted , particularly the air conditioning functions
OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH