Arrange the sentences P, Q, R and S to form a logical sequence between sentences 1 and 6.

1. An octopus appears to be just a huge head with eight long, fearful arms.

P. Its mouth is on the underside of its body.

Q. Its head is soft like rubber and its eyes stick out on stalks so that it can see in all directions.

R. It has powerful jaws shaped like a beak.

S. The long arms or tentacles have double rows of suckers which can fasten into objects.

6. They fasten into objects with such immense force that they cannot be pulled off.