Analyze the given text and detect any grammatical mistakes.
That was very frusterating for them.
The sentence contains a misspelling. The word "frusterating" should be spelled as "frustrating." Correct sentence: "That was very frustrating for them."
Complete the following task based on the instruction and optional input provided.### Instruction:
Analyze the given text and detect any grammatical mistakes.

### Input:
That was very frusterating for them.

### Output:
The sentence contains a misspelling. The word "frusterating" should be spelled as "frustrating." Correct sentence: "That was very frustrating for them."