{HEAD ~ The colors} could be recognized at {TAIL ~ a glance}, even by someone with poor eyesight 
recognized at
{ HEAD ~ The colors } could be recognized at { TAIL ~ a glance } , even by someone with poor eyesight
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH