Not when it's written, no. They have vowels that are represented by patterns of dots above and below the consonants, but generally those are only written for schoolchildren; adults recognize a word by the consonant pattern.
Do circumstances not arise where there's confusion between words? F'rinstance, something like brk - is that brook, broke, break, or bork? Or is the language diverse enough that that doesn't happen?
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Jack jumped in the brk.
Careful, you'll brk it.
I'm uneployed and totally brk.
Um dedoopdedoo de dorp de daaa, brk brk brk.
See? Context.