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