"Every beast … in the beast shall you eat": to include an embryo (as permitted by the shechitah of its mother).
I might think, even if it had stuck out its head; it is, therefore, written (7) "but" (connoting an exception). "it shall you eat": It may be eaten, but not an unclean animal.
This tells me only (that one who eats an unclean animal) transgresses a positive commandment [(note: a negative commandment derived from a positive commandment (as in the above) is a positive commandment)] Where do I derive that he also transgresses a negative commandment? From (7) "… the camel, the hare, and the coney … (8) and the swine … from their flesh you shall not eat."