Ὤδινεν ὄρος, Ζεὺς δ' ἐφοβεῖτο, τὸ δ' ἔτεκεν μῦν → The mountain was in labor—even Zeus was afraid—but gave birth to a mouse
smooth: P. and V. λεῖος.
fixed: use P. and V. πεπηγώς (perf. part. of πηγνύναι).