revision preference src: Though the abbey dwellers are able to drive off Ironbeak, Cornflower grows worried as autumn approaches with no sign of Matthias and Mattimeo returning. As Ironbeak is staring out from the walltop, Ironbeak sees them coming back and runs down to greet them. <SEP> tgt: Though the abbey dwellers are able to drive off Ironbeak, Cornflower grows worried as autumn approaches with no sign of Matthias and Mattimeo returning. However, as she is staring out from the walltop, she sees them coming back and runs down to greet them.