English verb conjugation
COULD SAPONIFY

Regular verb: saponify - saponified - saponified

Affirmation

Simple form	V-ing form
I could saponify you could saponify he could saponify we could saponify you could saponify they could saponify	I could be saponifying you could be saponifying he could be saponifying we could be saponifying you could be saponifying they could be saponifying
Perfect	V-ing perfect
I could have saponified you could have saponified he could have saponified we could have saponified you could have saponified they could have saponified	I could have been saponifying you could have been saponifying he could have been saponifying we could have been saponifying you could have been saponifying they could have been saponifying

Negation

Simple form	V-ing form
I couldn't saponify you couldn't saponify he couldn't saponify we couldn't saponify you couldn't saponify they couldn't saponify	I couldn't be saponifying you couldn't be saponifying he couldn't be saponifying we couldn't be saponifying you couldn't be saponifying they couldn't be saponifying
Perfect	V-ing perfect
I couldn't have saponified you couldn't have saponified he couldn't have saponified we couldn't have saponified you couldn't have saponified they couldn't have saponified	I couldn't have been saponifying you couldn't have been saponifying he couldn't have been saponifying we couldn't have been saponifying you couldn't have been saponifying they couldn't have been saponifying

Interrogative form

Simple form	V-ing form
could I saponify? could you saponify? could he saponify? could we saponify? could you saponify? could they saponify?	could I be saponifying? could you be saponifying? could he be saponifying? could we be saponifying? could you be saponifying? could they be saponifying?
Perfect	V-ing perfect
could I have saponified? could you have saponified? could he have saponified? could we have saponified? could you have saponified? could they have saponified?	could I have been saponifying? could you have been saponifying? could he have been saponifying? could we have been saponifying? could you have been saponifying? could they have been saponifying?

Interro-negative form

Simple form	V-ing form
couldn't I saponify? couldn't you saponify? couldn't he saponify? couldn't we saponify? couldn't you saponify? couldn't they saponify?	couldn't I be saponifying? couldn't you be saponifying? couldn't he be saponifying? couldn't we be saponifying? couldn't you be saponifying? couldn't they be saponifying?
Perfect	V-ing perfect
couldn't I have saponified? couldn't you have saponified? couldn't he have saponified? couldn't we have saponified? couldn't you have saponified? couldn't they have saponified?	couldn't I have been saponifying? couldn't you have been saponifying? couldn't he have been saponifying? couldn't we have been saponifying? couldn't you have been saponifying? couldn't they have been saponifying?