The following steps are involved in making a   spigot and socket joint of cast iron pipes used in water supply systems:

1.   Tarred gasket or hemp yarn is   wrapped around the spigot

2.   The spigot end is centred into the socket end of the preceding pipe.

3.   A jointing ring is placed around the barrel and against the face of the socket.

4.   The gasket or hemp yarn is caulked slightly.

5.   Molten pig lead is poured and then caulked.

The correct sequence of these steps is