English verb conjugation
CAN PEBBLE

Regular verb: pebble - pebbled - pebbled

Affirmation

Simple form	V-ing form
I can pebble you can pebble he can pebble we can pebble you can pebble they can pebble	I can be pebbling you can be pebbling he can be pebbling we can be pebbling you can be pebbling they can be pebbling
Perfect	V-ing perfect
I can have pebbled you can have pebbled he can have pebbled we can have pebbled you can have pebbled they can have pebbled	I can have been pebbling you can have been pebbling he can have been pebbling we can have been pebbling you can have been pebbling they can have been pebbling

Negation

Simple form	V-ing form
I can't pebble you can't pebble he can't pebble we can't pebble you can't pebble they can't pebble	I can't be pebbling you can't be pebbling he can't be pebbling we can't be pebbling you can't be pebbling they can't be pebbling
Perfect	V-ing perfect
I can't have pebbled you can't have pebbled he can't have pebbled we can't have pebbled you can't have pebbled they can't have pebbled	I can't have been pebbling you can't have been pebbling he can't have been pebbling we can't have been pebbling you can't have been pebbling they can't have been pebbling

Interrogative form

Simple form	V-ing form
can I pebble? can you pebble? can he pebble? can we pebble? can you pebble? can they pebble?	can I be pebbling? can you be pebbling? can he be pebbling? can we be pebbling? can you be pebbling? can they be pebbling?
Perfect	V-ing perfect
can I have pebbled? can you have pebbled? can he have pebbled? can we have pebbled? can you have pebbled? can they have pebbled?	can I have been pebbling? can you have been pebbling? can he have been pebbling? can we have been pebbling? can you have been pebbling? can they have been pebbling?

Interro-negative form

Simple form	V-ing form
can't I pebble? can't you pebble? can't he pebble? can't we pebble? can't you pebble? can't they pebble?	can't I be pebbling? can't you be pebbling? can't he be pebbling? can't we be pebbling? can't you be pebbling? can't they be pebbling?
Perfect	V-ing perfect
can't I have pebbled? can't you have pebbled? can't he have pebbled? can't we have pebbled? can't you have pebbled? can't they have pebbled?	can't I have been pebbling? can't you have been pebbling? can't he have been pebbling? can't we have been pebbling? can't you have been pebbling? can't they have been pebbling?