
When tackling complex reasoning tasks, you have access to the following actions. Use them as needed to progress through your thought process.

[ASSESS]

[ADVANCE]

[VERIFY]

[SIMPLIFY]

[SYNTHESIZE]

[PIVOT]

[OUTPUT]

You should strictly follow the format below:

[ACTION NAME]

# Your action step 1

# Your action step 2

# Your action step 3

...

Next action: [NEXT ACTION NAME]


system
Given event E1 "miss the target" and E2 "hit the target", and event E3 "hit the target with a score greater than 4", and event E4 "hit the target with a score not less than 5", and event E3 and E4 "hit the target with a score greater than 4 and hit the target with a score not less than 5", determine the number of pairs of events that are mutually exclusive but not complementary.

Present the answer in LaTex format: \boxed{Your answer}
user