can yeast
Regular verb: yeast - yeasted- yeasted

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can yeast
you can yeast
he can yeast
we can yeast
you can yeast
they can yeast 	I can be yeasting
you can be yeasting
he can be yeasting
we can be yeasting
you can be yeasting
they can be yeasting	I can have yeasted
you can have yeasted
he can have yeasted
we can have yeasted
you can have yeasted
they can have yeasted	I can have been yeasting
you can have been yeasting
he can have been yeasting
we can have been yeasting
you can have been yeasting
they can have been yeasting	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I cannot yeast
you cannot yeast
he cannot yeast
we cannot yeast
you cannot yeast
they cannot yeast 	I cannot be yeasting
you cannot be yeasting
he cannot be yeasting
we cannot be yeasting
you cannot be yeasting
they cannot be yeasting	I cannot have yeasted
you cannot have yeasted
he cannot have yeasted
we cannot have yeasted
you cannot have yeasted
they cannot have yeasted	I cannot have been yeasting
you cannot have been yeasting
he cannot have been yeasting
we cannot have been yeasting
you cannot have been yeasting
they cannot have been yeasting	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I yeast?
can you yeast?
can he yeast?
can we yeast?
can you yeast?
can they yeast? 	can I be yeasting?
can you be yeasting?
can he be yeasting?
can we be yeasting?
can you be yeasting?
can they be yeasting? 	can I have yeasted?
can you have yeasted?
can he have yeasted?
can we have yeasted?
can you have yeasted?
can they have yeasted? 	can I have been yeasting?
can you have been yeasting?
can he have been yeasting?
can we have been yeasting?
can you have been yeasting?
can they have been yeasting? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I not yeast?
can you not yeast?
can he not yeast?
can we not yeast?
can you not yeast?
can they not yeast? 	can I not be yeasting?
can you not be yeasting?
can he not be yeasting?
can we not be yeasting?
can you not be yeasting?
can they not be yeasting? 	can I not have yeasted?
can you not have yeasted?
can he not have yeasted?
can we not have yeasted?
can you not have yeasted?
can they not have yeasted? 	can I not have been yeasting?
can you not have been yeasting?
can he not have been yeasting?
can we not have been yeasting?
can you not have been yeasting?
can they not have been yeasting?