| interface(participate, cooperate, conspire) |
| join forces(expression, aid, participate, cooperate, collaborate) |
| join in(expression, aid, cooperate, collaborate) |
| join together(expression, participate, cooperate, conspire) |
| join up with(expression, idiom, participate, cooperate, conspire) |
| league(aid, cooperate, collaborate) |
| lend a hand(expression, idiom, aid, cooperate, collaborate) |
| participate(aid, cooperate, collaborate, conspire) |
| partner(aid, cooperate, collaborate) |
| pitch in(expression, aid, cooperate, collaborate) |
| play ball(expression, aid, cooperate, collaborate) |
| pool resources(expression, aid, participate, cooperate, collaborate) |
| pull together(expression, aid, cooperate, collaborate) |
| second(aid, cooperate, collaborate) |
| share in(expression, aid, cooperate, collaborate) |
| show willingness(expression, aid, cooperate, collaborate) |
| side with(expression, aid, cooperate, collaborate) |
| stick together(expression, aid, cooperate, collaborate) |
| succor(aid, cooperate, collaborate) |
| take part(expression, aid, cooperate, collaborate) |