could fumigate
Regular verb: fumigate - fumigated- fumigated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could fumigate
you could fumigate
she could fumigate
we could fumigate
you could fumigate
they could fumigate 	I could be fumigating
you could be fumigating
she could be fumigating
we could be fumigating
you could be fumigating
they could be fumigating	I could have fumigated
you could have fumigated
she could have fumigated
we could have fumigated
you could have fumigated
they could have fumigated	I could have been fumigating
you could have been fumigating
she could have been fumigating
we could have been fumigating
you could have been fumigating
they could have been fumigating	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't fumigate
you couldn't fumigate
she couldn't fumigate
we couldn't fumigate
you couldn't fumigate
they couldn't fumigate 	I couldn't be fumigating
you couldn't be fumigating
she couldn't be fumigating
we couldn't be fumigating
you couldn't be fumigating
they couldn't be fumigating	I couldn't have fumigated
you couldn't have fumigated
she couldn't have fumigated
we couldn't have fumigated
you couldn't have fumigated
they couldn't have fumigated	I couldn't have been fumigating
you couldn't have been fumigating
she couldn't have been fumigating
we couldn't have been fumigating
you couldn't have been fumigating
they couldn't have been fumigating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I fumigate?
could you fumigate?
could she fumigate?
could we fumigate?
could you fumigate?
could they fumigate? 	could I be fumigating?
could you be fumigating?
could she be fumigating?
could we be fumigating?
could you be fumigating?
could they be fumigating? 	could I have fumigated?
could you have fumigated?
could she have fumigated?
could we have fumigated?
could you have fumigated?
could they have fumigated? 	could I have been fumigating?
could you have been fumigating?
could she have been fumigating?
could we have been fumigating?
could you have been fumigating?
could they have been fumigating? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I fumigate?
couldn't you fumigate?
couldn't she fumigate?
couldn't we fumigate?
couldn't you fumigate?
couldn't they fumigate? 	couldn't I be fumigating?
couldn't you be fumigating?
couldn't she be fumigating?
couldn't we be fumigating?
couldn't you be fumigating?
couldn't they be fumigating? 	couldn't I have fumigated?
couldn't you have fumigated?
couldn't she have fumigated?
couldn't we have fumigated?
couldn't you have fumigated?
couldn't they have fumigated? 	couldn't I have been fumigating?
couldn't you have been fumigating?
couldn't she have been fumigating?
couldn't we have been fumigating?
couldn't you have been fumigating?
couldn't they have been fumigating?