Note (return) — INTRODUCTION
Reading edition
(a) A stressed "weak" vowel (i, u) may not combine with a "strong" vowel (a, e, o) to form a diphthong: dí|a, rí|e, frí|o, ra|íz, le|í|do, o|í|do, con|ti|nú|a, con|ti|nú|e, con|ti|nú|o, ba|úl, sa|bí|a, sa|brí|ais, ca|í|ais, etc.14