A phonology using the Latin alphabet, but using random graphemes:
Consonants:
Labials: Dentals: Palatals: Velars:
Stops: V W J T
Glottalized stops: Z I G H
Fricatives: Q L C S
There is no phonological opposition between voiced and unvoiced stops, but as most speakers prefer to realize the glottalized stops as ejectives, the pulmonic stops tend to be voiced, especially between vowels. Of course, the phonological opposition between voiced and unvoiced fricatives is even weaker. The dental fricative can be pronounced sulcal or non-sulcal, without phonological consequences.
Sonorants:
M
The sonorant is phonetically nasal at coda, phonetically liquid at onset. This liquid is a lateral after labials and velars, and a trill after dentals and palatals. Most people use an uvular trill.
Vowels:
Front: B
Central: P
Back: L
In their neutral forms, the front vowel is phonetically unrounded, the back vowel rounded. The central vowel prefers low realizations. There is no phonological opposition between the laryngeal stop and the laryngeal fricative for words beginning with a vowel. Loanwords from languages that do, use the velar fricative for the laryngeal fricative.
Acceptable syllable structures: CV, CVS, CSV, CSVS, CSVC, CVSC, V, VC, VS, and VSC.
Having sixteen phonemes available should be enough to produce a lot of words.