1.   To combat violence, authorities have closed down bars, sent hooligan spotters into crowds, and put hundreds of police at potential flashpoints.

2.   To combat violence, authorities have closed down bars, sent hooligan spotters into crowds, and put hundreds of police at potential flaspoints.

3.   Dozens of police hooligan spotters from four nations including Britain arrived in Japan Monday to help local police pick out potential troublemakers.

4.   Police hooligan spotters from four nations arrived in Japan Monday to help Japanese police prevent disturbances by violent football fans during the World Cup.

5.   Police hooligan spotters from four nations including Britain arrived in Japan Monday to help Japanese police.