The term 'NOT A PROBLEM' can be expressed in a variety of ways, as evidenced by the crossword solutions provided. The four-letter solutions are 'SURE' and 'EASY, ' which indicate that the task is not difficult. The five-letter solutions are 'CANDO' and 'ITSOK, ' which suggest that it is possible to complete the task and that it is acceptable. The seven-letter solutions are 'ITSEASY, ' 'ITSOKAY, ' 'SURECAN, ' and 'THATSOK, ' which further emphasize that the task is not difficult and is acceptable. Finally, the nine-letter solution is 'NOBIGDEAL, ' which implies that the task is not important. All of these solutions together demonstrate that the task is not a problem.