English verb conjugation
COULD BOIT

Regular verb: boit - boited - boited

Affirmation

Simple form	V-ing form
I could boit you could boit he could boit we could boit you could boit they could boit	I could be boiting you could be boiting he 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 he 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 he 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 couldn't boit you couldn't boit he couldn't boit we couldn't boit you couldn't boit they couldn't boit	I couldn't be boiting you couldn't be boiting he couldn't be boiting we couldn't be boiting you couldn't be boiting they couldn't be boiting
Perfect	V-ing perfect
I couldn't have boited you couldn't have boited he couldn't have boited we couldn't have boited you couldn't have boited they couldn't have boited	I couldn't have been boiting you couldn't have been boiting he couldn't have been boiting we couldn't have been boiting you couldn't have been boiting they couldn't have been boiting

Interrogative form

Simple form	V-ing form
could I boit? could you boit? could he boit? could we boit? could you boit? could they boit?	could I be boiting? could you be boiting? could he 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 he 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 he 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
couldn't I boit? couldn't you boit? couldn't he boit? couldn't we boit? couldn't you boit? couldn't they boit?	couldn't I be boiting? couldn't you be boiting? couldn't he be boiting? couldn't we be boiting? couldn't you be boiting? couldn't they be boiting?
Perfect	V-ing perfect
couldn't I have boited? couldn't you have boited? couldn't he have boited? couldn't we have boited? couldn't you have boited? couldn't they have boited?	couldn't I have been boiting? couldn't you have been boiting? couldn't he have been boiting? couldn't we have been boiting? couldn't you have been boiting? couldn't they have been boiting?