C3O1O1P3E1R1A1T1E1
13 points
COOPERATE is validvalid
[v COOPERATED, COOPERATES, COOPERATING] : COOPERATION [n], COOPERATOR [n]
to work together [v COOPERATED, COOPERATING, COOPERATES]
[v COOPERATED, COOPERATES, COOPERATING] : COOPERATION [n], COOPERATOR [n]
to work together [v COOPERATED, COOPERATING, COOPERATES]