A male may stand_by as an observer.Logical formLearned from3 sentences. Persons may stand_by for a conversation.Logical formLearned from3 sentences. Hundreds of police may stand_by in case of trouble.Logical formLearned from3 sentences. Nations may stand_by in_the_face_of sinkings of a warship.Logical formLearned from3 sentences. Police may stand_by closer to a checkpoint.Logical formLearned from3 sentences. Dignitaries may stand_by in silence.Logical formLearned from3 sentences. Police may stand_by on a street.Logical formLearned from3 sentences. Troops may stand_by without intervenning.Logical formLearned from3 sentences. (Agency negotiators) may stand_by on a cutter.Logical formLearned from3 sentences. Persons may stand_by to some extent.Logical formLearned from3 sentences. Some peacekeepers may stand_by with bulldozers.Logical formLearned from3 sentences. (Station resident) may stand_by with a laptop.Logical formLearned from3 sentences. Loved ones may stand_by in silence.Logical formLearned from3 sentences. Some police may stand_by as thousands of fans.Logical formLearned from3 sentences. Police may stand_by in a distance.Logical formLearned from3 sentences.