English verb conjugation
CAN PRESOLVE

Regular verb: presolve - presolved - presolved

Affirmation

Simple form	V-ing form
I can presolve you can presolve he can presolve we can presolve you can presolve they can presolve	I can be presolving you can be presolving he can be presolving we can be presolving you can be presolving they can be presolving
Perfect	V-ing perfect
I can have presolved you can have presolved he can have presolved we can have presolved you can have presolved they can have presolved	I can have been presolving you can have been presolving he can have been presolving we can have been presolving you can have been presolving they can have been presolving

Negation

Simple form	V-ing form
I can't presolve you can't presolve he can't presolve we can't presolve you can't presolve they can't presolve	I can't be presolving you can't be presolving he can't be presolving we can't be presolving you can't be presolving they can't be presolving
Perfect	V-ing perfect
I can't have presolved you can't have presolved he can't have presolved we can't have presolved you can't have presolved they can't have presolved	I can't have been presolving you can't have been presolving he can't have been presolving we can't have been presolving you can't have been presolving they can't have been presolving

Interrogative form

Simple form	V-ing form
can I presolve? can you presolve? can he presolve? can we presolve? can you presolve? can they presolve?	can I be presolving? can you be presolving? can he be presolving? can we be presolving? can you be presolving? can they be presolving?
Perfect	V-ing perfect
can I have presolved? can you have presolved? can he have presolved? can we have presolved? can you have presolved? can they have presolved?	can I have been presolving? can you have been presolving? can he have been presolving? can we have been presolving? can you have been presolving? can they have been presolving?

Interro-negative form

Simple form	V-ing form
can't I presolve? can't you presolve? can't he presolve? can't we presolve? can't you presolve? can't they presolve?	can't I be presolving? can't you be presolving? can't he be presolving? can't we be presolving? can't you be presolving? can't they be presolving?
Perfect	V-ing perfect
can't I have presolved? can't you have presolved? can't he have presolved? can't we have presolved? can't you have presolved? can't they have presolved?	can't I have been presolving? can't you have been presolving? can't he have been presolving? can't we have been presolving? can't you have been presolving? can't they have been presolving?