Arragne the following sentences in proper sequence 

1) Thus begins the search for relief: painkillers, ice, yoga, herbs, even surgery

2) Most computer users develop disorders because they ignore warnings like tingling fingers, a numb hand or a sore shoulder

3) They keep pointing and dragging until tendons chafe and scar tissue forms, along with bad habits that are almost impossible to change

4) But cures are elusive , because repetitive stree injuries present a bag of ills that often defy easy diagnosis.