S₁: Until the hospital could be built there was no surgery available for the patients. S₆: Working in the sun was very tiring. P: But there were disadvantages. Q: Schweitzer therefore started his medical treatment in an open space outside his house. R: Moreover, there was a storm almost every evening, when everything had to be dragged hurriedly to the shelter of the verandah. S: After a short time an emergency hospital was created from a rough fowl-house. The proper sequence should be