I could familiarise you could familiarise he could familiarise we could familiarise you could familiarise they could familiarise
V-ing form
I could be familiarising you could be familiarising he could be familiarising we could be familiarising you could be familiarising they could be familiarising
Perfect
I could have familiarised you could have familiarised he could have familiarised we could have familiarised you could have familiarised they could have familiarised
V-ing perfect
I could have been familiarising you could have been familiarising he could have been familiarising we could have been familiarising you could have been familiarising they could have been familiarising
Negation
Simple form
I couldn't familiarise you couldn't familiarise he couldn't familiarise we couldn't familiarise you couldn't familiarise they couldn't familiarise
V-ing form
I couldn't be familiarising you couldn't be familiarising he couldn't be familiarising we couldn't be familiarising you couldn't be familiarising they couldn't be familiarising
Perfect
I couldn't have familiarised you couldn't have familiarised he couldn't have familiarised we couldn't have familiarised you couldn't have familiarised they couldn't have familiarised
V-ing perfect
I couldn't have been familiarising you couldn't have been familiarising he couldn't have been familiarising we couldn't have been familiarising you couldn't have been familiarising they couldn't have been familiarising
Interrogative form
Simple form
could I familiarise? could you familiarise? could he familiarise? could we familiarise? could you familiarise? could they familiarise?
V-ing form
could I be familiarising? could you be familiarising? could he be familiarising? could we be familiarising? could you be familiarising? could they be familiarising?
Perfect
could I have familiarised? could you have familiarised? could he have familiarised? could we have familiarised? could you have familiarised? could they have familiarised?
V-ing perfect
could I have been familiarising? could you have been familiarising? could he have been familiarising? could we have been familiarising? could you have been familiarising? could they have been familiarising?
Interro-negative form
Simple form
couldn't I familiarise? couldn't you familiarise? couldn't he familiarise? couldn't we familiarise? couldn't you familiarise? couldn't they familiarise?
V-ing form
couldn't I be familiarising? couldn't you be familiarising? couldn't he be familiarising? couldn't we be familiarising? couldn't you be familiarising? couldn't they be familiarising?
Perfect
couldn't I have familiarised? couldn't you have familiarised? couldn't he have familiarised? couldn't we have familiarised? couldn't you have familiarised? couldn't they have familiarised?
V-ing perfect
couldn't I have been familiarising? couldn't you have been familiarising? couldn't he have been familiarising? couldn't we have been familiarising? couldn't you have been familiarising? couldn't they have been familiarising?