I found this poem in the collection Philosophia Patrum edited by Julius Wegeler.
Quis, cui, quomodo, cur videndum et quando
Qui bene curatas res velit esse suas.
The vocabulary is keyed to the DCC Latin Vocabulary list. All the words in this poem are on that list:
cūro -āre: care for (+ acc.)
qui, quae, quod: who, which, what; quis quid: who? what? which?
quōmodo: in what way, how?
rēs reī f.: thing (rēs pūblica, commonwealth; rēs familiāris, family property, estate; rēs mīlitāris, art of war; rēs novae, revolution)
sum, esse, fuī: be, exist
suus -a -um: his own, her own, its own
video -ēre vīdī vīsum: see
volo velle voluī: wish, be willing