This problem is not 10, but about 4.4, about 256, slightly less than 256. It can't be only 10, it's too far.

If you need details, I can work it out for you.

The correct answer is 4 * 3 * 3 *1+4 * 3 *1* 4 *1+4 *1* 3 *1= 4 * 27+48+48 = 204 species.

The above mistakes are regarded as five people.

If it's three people, then

Abcbcaacbcbaababca Abakaba; acabcaacacbaabcabaabcacaacbabaacbaca

That is 2 *1*1*1+2 *1* 2 *1*1+2+.