As stated above, {HEAD ~ the Master and User Devices} 220, 222, 224 may be {TAIL ~ any number} of electronic devices including, but not limited to, PDAs, mobile telephones, mobile PCs or desktop units, televisions, amulets, or other pure input/output devices 
be
As stated above , { HEAD ~ the Master and User Devices } 220 , 222 , 224 may be { TAIL ~ any number } of electronic devices including , but not limited to , PDAs , mobile telephones , mobile PCs or desktop units , televisions , amulets , or other pure input / output devices
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH REL TAIL 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