(1) Direct object pronoun tones with verbs ending in -a and -e: Direct object pronouns nearly always have tone opposite to the preceding syllable. However, in two cases, pronoun objects copy a preceding High tone. Both involve "regular" verbs ending in -a or -e.
(2) Final vowel length of -e verbs: Verbs ending in -e can keep a long final vowel before noun objects. If the vowel of a 3+ syllable verb is pronounced long, the final tone is also high.