
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
Cybil, Ronda, and Trina are sisters. The 15 letters from their names are placed on identical cards so that each of 15 cards contains one letter. Without replacement, two cards are selected at random from the 15 cards. What is the probability that one letter is from Cybil's name and the other is from either Ronda's or Trina's name? Assume the letters are distributed as follows: Cybil - 5 letters, Ronda - 6 letters, Trina - 4 letters.

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