source: [word=often] [□=□] □ □
destination: [word=often] [tag=□] □ □
spec: The discharge often occurs spontaneously and involves multiple ducts . Some indeed get so close to their neighbours that they get rather distorted . IO needles may be left in place for 72-96 hours , but the risk of infection and dislodgment increase ; in practice , the IO needle is removed once alternative vascular access is obtained . When he needs groceries , he often calls ahead and has the store clerk shop for him and bring his bags out to the window of his car . By contrast , where the institutional arrangements do not provide farmers with sufficient incentive to market their output through the scheme , the system often breaks down and the contribution of cash cropping to food crop productivity is not realized .