English verb conjugation
CAN FERMENT

Regular verb: ferment - fermented - fermented

Affirmation

Simple form	V-ing form
I can ferment you can ferment he can ferment we can ferment you can ferment they can ferment	I can be fermenting you can be fermenting he can be fermenting we can be fermenting you can be fermenting they can be fermenting
Perfect	V-ing perfect
I can have fermented you can have fermented he can have fermented we can have fermented you can have fermented they can have fermented	I can have been fermenting you can have been fermenting he can have been fermenting we can have been fermenting you can have been fermenting they can have been fermenting

Negation

Simple form	V-ing form
I can't ferment you can't ferment he can't ferment we can't ferment you can't ferment they can't ferment	I can't be fermenting you can't be fermenting he can't be fermenting we can't be fermenting you can't be fermenting they can't be fermenting
Perfect	V-ing perfect
I can't have fermented you can't have fermented he can't have fermented we can't have fermented you can't have fermented they can't have fermented	I can't have been fermenting you can't have been fermenting he can't have been fermenting we can't have been fermenting you can't have been fermenting they can't have been fermenting

Interrogative form

Simple form	V-ing form
can I ferment? can you ferment? can he ferment? can we ferment? can you ferment? can they ferment?	can I be fermenting? can you be fermenting? can he be fermenting? can we be fermenting? can you be fermenting? can they be fermenting?
Perfect	V-ing perfect
can I have fermented? can you have fermented? can he have fermented? can we have fermented? can you have fermented? can they have fermented?	can I have been fermenting? can you have been fermenting? can he have been fermenting? can we have been fermenting? can you have been fermenting? can they have been fermenting?

Interro-negative form

Simple form	V-ing form
can't I ferment? can't you ferment? can't he ferment? can't we ferment? can't you ferment? can't they ferment?	can't I be fermenting? can't you be fermenting? can't he be fermenting? can't we be fermenting? can't you be fermenting? can't they be fermenting?
Perfect	V-ing perfect
can't I have fermented? can't you have fermented? can't he have fermented? can't we have fermented? can't you have fermented? can't they have fermented?	can't I have been fermenting? can't you have been fermenting? can't he have been fermenting? can't we have been fermenting? can't you have been fermenting? can't they have been fermenting?