/w/ metathesizes with /m/.
/w/ of the negative suffix is elided between vowels.
/ë/ is inserted as a transition sound in in the /ww/ sequence; the first /w/ of this sequence, now between vowels, is elided and is replaced by /y/ as a transition sound.
/wa/ is realized as /o/ in the two final sequences; an unrelated /w/ is inserted as a transition sound before the first /o/.