I will just form a few phrases with the particle .
[]{} **** []{} = "(a) bedridden elderly person(s)"
2[]{}[]{}[]{} **** []{} = "Maria went to Japan 2 years ago and has not returned since."
[]{}[]{} **** []{}[]{}[]{}[]{} = "Don't keep your windows shut all the time. Crack'em open once in a while for ventilation."
Note: In informal speech, is often pronounced , but remember not to use in a phrase like because you will end up sounding like you have grudges against those elderly.