Grammar of Shadow

In cold concrete a hidden grammar sprouts,
the shadows whisper verbs in leaden cracks;
each line is a root that searches for the light,
every breath marks the punctuation of the dark.
Letters turn into plants, night is a perpetual noun,
the rain weaves conjunctions through roots and pipes;
if a word falls, a leaf is born in the cracks,
and the city learns to speak, the grammar will not be silent.