left o --o-- o
--o-- o right/font>
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The circles with the bars
denote the guard positions of members of one of the team (Team A). Their
arms stretched on both sides. The other team (Team B) is suppose to cross
the guards of team A. Team B must cross from left to right without being
bodily touched by the guards. When they successfully cross all the guards
(left to right) they get a score.
The whole process is repeated
until one member of Team B is caught or bodily touched by any of the guards.
Then by this time, it is the turn of Team B to form the guard positions.
Team A crosses and tries to score.