Classify the following words according to the rules of reading of the ending -s.

• Группы
  • \[iz\]
  • \[s\]
  • \[z\]
• Варианты
  • stops
  • washes
  • does
  • closes
  • plays
  • dies
  • albums
  • takes
  • sneezes
  • slashes
  • lives
  • houses
  • sees
  • streets
  • buses
  • marks
  • mixes
  • officials
  • stays
  • shows
  • gets
  • asks
  • works
  • boxes
  • roofs