I could transit you could transit she could transit we could transit you could transit they could transit
V-ing form
I could be transiting you could be transiting she could be transiting we could be transiting you could be transiting they could be transiting
Perfect
I could have transited you could have transited she could have transited we could have transited you could have transited they could have transited
V-ing perfect
I could have been transiting you could have been transiting she could have been transiting we could have been transiting you could have been transiting they could have been transiting
Negation
Simple form
I couldn't transit you couldn't transit she couldn't transit we couldn't transit you couldn't transit they couldn't transit
V-ing form
I couldn't be transiting you couldn't be transiting she couldn't be transiting we couldn't be transiting you couldn't be transiting they couldn't be transiting
Perfect
I couldn't have transited you couldn't have transited she couldn't have transited we couldn't have transited you couldn't have transited they couldn't have transited
V-ing perfect
I couldn't have been transiting you couldn't have been transiting she couldn't have been transiting we couldn't have been transiting you couldn't have been transiting they couldn't have been transiting
Interrogative form
Simple form
could I transit? could you transit? could she transit? could we transit? could you transit? could they transit?
V-ing form
could I be transiting? could you be transiting? could she be transiting? could we be transiting? could you be transiting? could they be transiting?
Perfect
could I have transited? could you have transited? could she have transited? could we have transited? could you have transited? could they have transited?
V-ing perfect
could I have been transiting? could you have been transiting? could she have been transiting? could we have been transiting? could you have been transiting? could they have been transiting?
Interro-negative form
Simple form
couldn't I transit? couldn't you transit? couldn't she transit? couldn't we transit? couldn't you transit? couldn't they transit?
V-ing form
couldn't I be transiting? couldn't you be transiting? couldn't she be transiting? couldn't we be transiting? couldn't you be transiting? couldn't they be transiting?
Perfect
couldn't I have transited? couldn't you have transited? couldn't she have transited? couldn't we have transited? couldn't you have transited? couldn't they have transited?
V-ing perfect
couldn't I have been transiting? couldn't you have been transiting? couldn't she have been transiting? couldn't we have been transiting? couldn't you have been transiting? couldn't they have been transiting?