English verb conjugation
COULD BOIT

Regular verb: boit - boited - boited

Affirmation

Simple form	V-ing form
I could boit you could boit she could boit we could boit you could boit they could boit	I could be boiting you could be boiting she could be boiting we could be boiting you could be boiting they could be boiting
Perfect	V-ing perfect
I could have boited you could have boited she could have boited we could have boited you could have boited they could have boited	I could have been boiting you could have been boiting she could have been boiting we could have been boiting you could have been boiting they could have been boiting

Negation

Simple form	V-ing form
I could not boit you could not boit she could not boit we could not boit you could not boit they could not boit	I could not be boiting you could not be boiting she could not be boiting we could not be boiting you could not be boiting they could not be boiting
Perfect	V-ing perfect
I could not have boited you could not have boited she could not have boited we could not have boited you could not have boited they could not have boited	I could not have been boiting you could not have been boiting she could not have been boiting we could not have been boiting you could not have been boiting they could not have been boiting

Interrogative form

Simple form	V-ing form
could I boit? could you boit? could she boit? could we boit? could you boit? could they boit?	could I be boiting? could you be boiting? could she be boiting? could we be boiting? could you be boiting? could they be boiting?
Perfect	V-ing perfect
could I have boited? could you have boited? could she have boited? could we have boited? could you have boited? could they have boited?	could I have been boiting? could you have been boiting? could she have been boiting? could we have been boiting? could you have been boiting? could they have been boiting?

Interro-negative form

Simple form	V-ing form
could I not boit? could you not boit? could she not boit? could we not boit? could you not boit? could they not boit?	could I not be boiting? could you not be boiting? could she not be boiting? could we not be boiting? could you not be boiting? could they not be boiting?
Perfect	V-ing perfect
could I not have boited? could you not have boited? could she not have boited? could we not have boited? could you not have boited? could they not have boited?	could I not have been boiting? could you not have been boiting? could she not have been boiting? could we not have been boiting? could you not have been boiting? could they not have been boiting?