aiilyn kept us scrubbing floors until we were used to it then she had us carrying bales of roots up from the deep caverns into the refectory , a chore that left my back a mass of tortured muscle then she had us in the field , pulling rocks from the ground and tossing them into the forest then she had us in the highest branches of the bower picking berries from huge thorny brambles that grew all throughout the leaves of the tree , giving us several dozen prickle wounds each to add to our growing inventory of ailments .