Using 'in' domain for installed components results in error

I have components under "components/in/forwardbias". I added "components" directory to the import paths. This results in the error below, presumably because 'in' is considered reserved or something. Changing 'in' to org or com fixes the problem.

file:///home/girish/tmp/main.qml:2:8: Expected token `numeric literal'
import in.forwardbias 1.0
^
file:///home/girish/tmp/main.qml:2:1: Expected a qualified name id or a string literal
import in.forwardbias 1.0
^