Furthermore, the button 5 has {HEAD ~ an improved ergonomic design} which is less prone to {TAIL ~ damage} by external forces 
is less prone to
Furthermore , the button 5 has { HEAD ~ an improved ergonomic design } which is less prone to { TAIL ~ damage } by external forces
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL REL REL REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH