English verb conjugation
CAN ULTRAFILTER

Regular verb: ultrafilter - ultrafiltered - ultrafiltered

Affirmation

Simple form	V-ing form
I can ultrafilter you can ultrafilter he can ultrafilter we can ultrafilter you can ultrafilter they can ultrafilter	I can be ultrafiltering you can be ultrafiltering he can be ultrafiltering we can be ultrafiltering you can be ultrafiltering they can be ultrafiltering
Perfect	V-ing perfect
I can have ultrafiltered you can have ultrafiltered he can have ultrafiltered we can have ultrafiltered you can have ultrafiltered they can have ultrafiltered	I can have been ultrafiltering you can have been ultrafiltering he can have been ultrafiltering we can have been ultrafiltering you can have been ultrafiltering they can have been ultrafiltering

Negation

Simple form	V-ing form
I can't ultrafilter you can't ultrafilter he can't ultrafilter we can't ultrafilter you can't ultrafilter they can't ultrafilter	I can't be ultrafiltering you can't be ultrafiltering he can't be ultrafiltering we can't be ultrafiltering you can't be ultrafiltering they can't be ultrafiltering
Perfect	V-ing perfect
I can't have ultrafiltered you can't have ultrafiltered he can't have ultrafiltered we can't have ultrafiltered you can't have ultrafiltered they can't have ultrafiltered	I can't have been ultrafiltering you can't have been ultrafiltering he can't have been ultrafiltering we can't have been ultrafiltering you can't have been ultrafiltering they can't have been ultrafiltering

Interrogative form

Simple form	V-ing form
can I ultrafilter? can you ultrafilter? can he ultrafilter? can we ultrafilter? can you ultrafilter? can they ultrafilter?	can I be ultrafiltering? can you be ultrafiltering? can he be ultrafiltering? can we be ultrafiltering? can you be ultrafiltering? can they be ultrafiltering?
Perfect	V-ing perfect
can I have ultrafiltered? can you have ultrafiltered? can he have ultrafiltered? can we have ultrafiltered? can you have ultrafiltered? can they have ultrafiltered?	can I have been ultrafiltering? can you have been ultrafiltering? can he have been ultrafiltering? can we have been ultrafiltering? can you have been ultrafiltering? can they have been ultrafiltering?

Interro-negative form

Simple form	V-ing form
can't I ultrafilter? can't you ultrafilter? can't he ultrafilter? can't we ultrafilter? can't you ultrafilter? can't they ultrafilter?	can't I be ultrafiltering? can't you be ultrafiltering? can't he be ultrafiltering? can't we be ultrafiltering? can't you be ultrafiltering? can't they be ultrafiltering?
Perfect	V-ing perfect
can't I have ultrafiltered? can't you have ultrafiltered? can't he have ultrafiltered? can't we have ultrafiltered? can't you have ultrafiltered? can't they have ultrafiltered?	can't I have been ultrafiltering? can't you have been ultrafiltering? can't he have been ultrafiltering? can't we have been ultrafiltering? can't you have been ultrafiltering? can't they have been ultrafiltering?