completion of secondary completion of studies completion of tasks completion of the building completion of the construction completion of the contract completion of the course completion of the first completion of the internal completion of the internal market completion of the mission completion of the procedure completion of the process completion of the program completion of the project completion of the reaction completion of the review completion of the second completion of the single market completion of the study completion of the task completion of the test completion of the training completion of the transaction completion of the work completion of the works completion of this project completion of training completion of treatment completion of work completion percentage completion point completion rate completion rates completion report completion reports completion scheduled completion strategies completion strategy completion time completion times completions completo complex complex accounting complex actions complex activities complex activity complex administrative complex affair complex algorithm complex algorithms complex analysis complex and ambiguous complex and can complex and challenging complex and changing complex and complicated complex and confusing complex and contradictory complex and controversial complex and costly complex and delicate complex and demanding complex and detailed complex and difficult complex and diverse complex and dynamic complex and expensive complex and heterogeneous complex and highly complex and important complex and interconnected complex and interesting complex and involve complex and lengthy complex and multifaceted complex and not complex and often complex and sensitive complex and sophisticated complex and subtle complex and technical complex and time consuming complex and time-consuming complex and unique complex and varied complex application complex applications complex approach complex architecture complex area complex areas complex arrangement complex arrangements complex array complex art complex as it complex aspects