English verb conjugation
CAN SAMPLE

Regular verb: sample - sampled - sampled

Affirmation

Simple form	V-ing form
I can sample you can sample he can sample we can sample you can sample they can sample	I can be sampling you can be sampling he can be sampling we can be sampling you can be sampling they can be sampling
Perfect	V-ing perfect
I can have sampled you can have sampled he can have sampled we can have sampled you can have sampled they can have sampled	I can have been sampling you can have been sampling he can have been sampling we can have been sampling you can have been sampling they can have been sampling

Negation

Simple form	V-ing form
I can't sample you can't sample he can't sample we can't sample you can't sample they can't sample	I can't be sampling you can't be sampling he can't be sampling we can't be sampling you can't be sampling they can't be sampling
Perfect	V-ing perfect
I can't have sampled you can't have sampled he can't have sampled we can't have sampled you can't have sampled they can't have sampled	I can't have been sampling you can't have been sampling he can't have been sampling we can't have been sampling you can't have been sampling they can't have been sampling

Interrogative form

Simple form	V-ing form
can I sample? can you sample? can he sample? can we sample? can you sample? can they sample?	can I be sampling? can you be sampling? can he be sampling? can we be sampling? can you be sampling? can they be sampling?
Perfect	V-ing perfect
can I have sampled? can you have sampled? can he have sampled? can we have sampled? can you have sampled? can they have sampled?	can I have been sampling? can you have been sampling? can he have been sampling? can we have been sampling? can you have been sampling? can they have been sampling?

Interro-negative form

Simple form	V-ing form
can't I sample? can't you sample? can't he sample? can't we sample? can't you sample? can't they sample?	can't I be sampling? can't you be sampling? can't he be sampling? can't we be sampling? can't you be sampling? can't they be sampling?
Perfect	V-ing perfect
can't I have sampled? can't you have sampled? can't he have sampled? can't we have sampled? can't you have sampled? can't they have sampled?	can't I have been sampling? can't you have been sampling? can't he have been sampling? can't we have been sampling? can't you have been sampling? can't they have been sampling?