You are given a paragraph, with numbered sentences, and a question. Write the numbers of the sentences needed to answer the given question. Separate multiple sentence numbers with a comma (", "). E.g. "1, 2" would be the correct response if Sent 1 and Sent 2 are needed to answer the given question (do not include sentences that contain no information that is necessary to answer the question). Sort the sentence numbers in an increasing order (i.e., '1, 2', instead of '2, 1'). Your answer should not contain anything than the sentence numbers separated by a comma (e.g. '1, 2, 3, 4'). The given question requires more than one sentence to answer. So, your answer must contain at least one comma (", ").
Q: Paragraph- Sent 1: Rakal, her first officer, was staring pensively at his panel.
Sent 2: He was what this was all about.
Sent 3: She watched his graceful fingers ending in thick black claws tap out calculations on the panel.
Sent 4: His pointed ears swiveled back and forth, catching every sound from the bridge, while his long tail swished to the rhythm of his thoughts.
Sent 5: Only those of the Arrallin Insurrection inner team knew he was no common 'beta furry'.
Sent 6: His silken fur, which would be tawny golden and striped with jet black bands, was dyed perfectly to a pure black, and his mane trimmed and thinned as to be indistinguishable from the rest of his coat.
Sent 7: His eyes had been treated and darkened to a rich purple to disguise the brilliant golden yellow color that would mark him as an Alpha Arrallin, and leader of his hive.
Sent 8: Right now, he looked like an overgrown wolf who'd learned touch-typing.
Sent 9: The scout ship re-emerged from the hole - a brilliant speck emerging from a sphere of velvety blackness.
Sent 10: It's hail crackled across the comm, and Tara spun to retake her seat at the helm.
Sent 11: "Launch the second probe.
Sent 12: Won't Central be crushed to learn that another gateway has yielded little more than a class F planet and a white dwarf system.
Sent 13: Level 1 and 2 staffers should prepare to be briefed and move out.
Sent 14: This sounds like it's the one."Sent 15: The distinctive whuffle of pleasure rippled through the betas on the bridge, and Rakal let loose a small growl, as if to caution his charges against false hope.
Sent 16: They'd scouted twenty-seven gates so far, and none had turned up anything worth the Insurrection's time.
Sent 17: Tara would not let giddy hopes drag them onto a rock that would spell the end for the project, and the Arrallin species.
Question: How had Rakal been disguised to prevent him from being recognized as a hive leader?.
A:
6, 7.