| help(play, participate, cooperate) |
| join forces(expression, play, participate, cooperate) |
| join in(expression, play, participate, cooperate) |
| league(play, participate, cooperate) |
| lend a hand(expression, idiom, play, participate, cooperate) |
| make an appearance(expression, idiom, play, participate, cooperate) |
| oblige(play, participate, cooperate) |
| participate(play, cooperate) |
| partner(play, participate, cooperate) |
| perform(play, participate, cooperate) |
| pitch in(expression, play, participate, cooperate) |
| play(participate, cooperate) |
| play a part(expression, idiom, play, participate, cooperate) |
| play ball(expression, play, participate, cooperate) |
| pool resources(expression, play, participate, cooperate) |
| present oneself(expression, play, participate, cooperate) |
| pull together(expression, play, participate, cooperate) |
| second(play, participate, cooperate) |
| share in(expression, play, participate, cooperate) |
| show willingness(expression, play, participate, cooperate) |