Making cuts 2

A string $s$ with a length of more than ten characters is given. Note that the first character of the string has an index of $0$. Find and output the following:

• The word formed by the third, seventh, and eleventh characters of the string $s$.

• The word formed by the first and the last two characters of the string $s$.

• The word formed by the first seven characters of the string $s$.

• The string $s$ without the first four characters.

• The word formed by all characters with odd indices, starting from the second character of the string $s$.

• The length of the word from the previous point.

• The string $s$ in reverse order.