English verb conjugation
CAN TICKLE

Regular verb: tickle - tickled - tickled

Affirmation

Simple form	V-ing form
I can tickle you can tickle he can tickle we can tickle you can tickle they can tickle	I can be tickling you can be tickling he can be tickling we can be tickling you can be tickling they can be tickling
Perfect	V-ing perfect
I can have tickled you can have tickled he can have tickled we can have tickled you can have tickled they can have tickled	I can have been tickling you can have been tickling he can have been tickling we can have been tickling you can have been tickling they can have been tickling

Negation

Simple form	V-ing form
I cannot tickle you cannot tickle he cannot tickle we cannot tickle you cannot tickle they cannot tickle	I cannot be tickling you cannot be tickling he cannot be tickling we cannot be tickling you cannot be tickling they cannot be tickling
Perfect	V-ing perfect
I cannot have tickled you cannot have tickled he cannot have tickled we cannot have tickled you cannot have tickled they cannot have tickled	I cannot have been tickling you cannot have been tickling he cannot have been tickling we cannot have been tickling you cannot have been tickling they cannot have been tickling

Interrogative form

Simple form	V-ing form
can I tickle? can you tickle? can he tickle? can we tickle? can you tickle? can they tickle?	can I be tickling? can you be tickling? can he be tickling? can we be tickling? can you be tickling? can they be tickling?
Perfect	V-ing perfect
can I have tickled? can you have tickled? can he have tickled? can we have tickled? can you have tickled? can they have tickled?	can I have been tickling? can you have been tickling? can he have been tickling? can we have been tickling? can you have been tickling? can they have been tickling?

Interro-negative form

Simple form	V-ing form
can I not tickle? can you not tickle? can he not tickle? can we not tickle? can you not tickle? can they not tickle?	can I not be tickling? can you not be tickling? can he not be tickling? can we not be tickling? can you not be tickling? can they not be tickling?
Perfect	V-ing perfect
can I not have tickled? can you not have tickled? can he not have tickled? can we not have tickled? can you not have tickled? can they not have tickled?	can I not have been tickling? can you not have been tickling? can he not have been tickling? can we not have been tickling? can you not have been tickling? can they not have been tickling?