ga – since prepronominal prefix
ga – before consonants
ga + y – before vowels, except – a –
ga + a = gv –

The most common use of this prepronominal prefix is to state something has not happened for a certain period, since.
It is the least common of all prepronominal prefixes.

ᎦᎩᏂᎪᎲᎢ / gaginigohvi / gaaginiigoohvvʔi – ᎦᎩᏂᎪᎲᎢ is pronounced g – short a (held) – g – short i – n – short i (held) – g – long o (held) – h – nasalized uh (held and highfall tone) – glottal stop – long e. gaginigohvi means since you and I saw it.

ᎬᎩᎪᎲᎢ / gvgigohvi / gvvgigoohvvʔi – gvgigohvi is pronounced g – nasalized uh (held) – g – short i – g – long o (held) – h – nasalized uh (held and highfall tone) – glottal stop – long e. ᎬᎩᎪᎲᎢ means since I saw it.

ᏫᎦᏲᎩᏲᏢ / wigayogiyotlv / wigaayoògii(h)yoohlv – ᏫᎦᏲᎩᏲᏢ is pronounced w – short i – g – short a (held) – y – long o (held, lowfall tone) – g – short i (held) – aspirated y – long o (held) – hl – nasalized v (high tone). wigayogiyotlv means since we all bought it.

When used with the Third Person Set B prefix, – u, the since prepronominal prefix becomes – gvw-.

ᎬᏩᎪᎲᎢ / gvwagohvi / gvvwagoohvvʔi – gvwagohvi is pronounced g – nasalized uh (held) – w – short a – g – long o (held) – h – nasalized uh (held and highfall tone) – glottal stop. ᎬᏩᎪᎲᎢ means since he saw it.