S1 : While crossing a busy road, we should obey the policemen on duty.
S6 : we Should never run while crossing the road.
P : We should never run while crossing the road.
Q : We must always cross the road at the zebra crossing .
R : If there are no signal lights at the crossing ,we should look to the right, then to left and again the right before crossing the road.
S : If the road is not clear we should wait.
The proper sequence should be