Find the correct sequence of sentences :
1 : I took cigarettes from my case.
P : but when the fit of coughing was over, he replaced it between his lips.
Q : I lit one of them and placed it between the lips.
R : then with a feeble hand he removed the cigarette.
S : slowly he took a pull at it and coughed violently.
6 : Then he continues to draw on it.