Ordinal numbers like -DIch come after nouns the way stative verbs such as "be red" do, but they're not verbs.
qoq Doq "the red robot"
qoq wejDIch "the third robot"
But ordinal numbers aren't verbs:
Doq qoq "the robot is red"
*wejDIch qoq "the robot is third" (* marks an incorrect sentence)